Term
| The information in DNA dictates the order of ____ in a _____. |
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Definition
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| Under normal conditions, sickle cell anemia is considered a recessive trait in humans. In a cross between a father and mother who are both heterozygous for the gene, what is the probability that a child will have sickle cell anemia(under normal conditions)? |
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Definition
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| Under normal conditions, sickle cell anemia is considered a recessive trait in humans. In a cross between a father who has sickle cell anemia and a mother who is heterozygous for the gene, what is the probability that their first three children will have sickle cell anemia(under normal conditions)? |
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Definition
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Term
| in Drosophilia Virilis nuclei of somatic cells contain 12 chromosomes while nuclei of sperm cells contain only 6 chromosomes what does 2N equal for this species? |
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Definition
12
** if it says just N its only 6 |
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Term
| _ occurs when chromosomes fail to separate properly during meiosis |
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Definition
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Term
| In whose lab was natural transformation first noticed? |
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Definition
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Term
| During which phase do sister chromatids segregate to opposite poles? |
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Definition
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Term
| A cross between a white eyed female fruit fly and a red eye male would generate which of the following types of progeny? |
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Definition
| Red eyed female, and white eyed males |
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Term
| the polarity of DNA synthesis is |
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Definition
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Term
| During which of the following stages of the cell cycle would a chromosome consist of only a single chromatid? |
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Definition
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Term
| Which of the following statements applies to homologous chromosomes? |
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Definition
| They contain the same genes in the same order but may have different alleles of some genes |
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Term
| cells said to be in the G stage |
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Definition
| are in extended G1 phase and no longer cycle |
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Term
| the zipper like connections between paired homologs in early prophase is know as a |
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Definition
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Term
| In drosophilia single bristled and carnation eyes are both caused by receive X linked allele. What is the value of chi sq for a test of the hypothesis that sn and car genes are unlinked? is there linkage? |
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Definition
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Term
| The pairwise map didtances for 4 linked genes are as follows: A-B=22mu, B-c=7mu, C-D=9mu, B-D=2mu, A-D=20mu, A-C=29mu. what is the order of these 4 genes? |
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Definition
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Term
| If you are a male, your X chromosome contains gens derived from |
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Definition
| Both your maternal grandfather and grandmother |
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Term
| In codominance,F1 hybrids show the traits of both parents |
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Definition
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Term
A person who has type AB blood had...
A. anti-A antibodies
B. anti-B antibodies
C. Both anti-A and anti-B bodies
D. None of the above |
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Definition
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Term
| Which of the following was probably the first genetic material on Earth? |
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Definition
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Term
| A rare recessive trait in a pedigree is indicated by which pattern of inheritance? |
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Definition
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Term
| An individual can be a heterozygote for one trait and a homozygote for another. |
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Definition
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Term
| A ____ is done to determine the genotype of an individual with a dominant phenotype |
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Definition
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Term
| Which of the following ratios indicates a lethal gene? |
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Definition
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Term
| In epistasis, one genes alleles mask the effects of another genes alleles |
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Definition
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Term
| In complementary gene action, dominant alleles of two or more genes are required to generate a particular trait. |
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Definition
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Term
| The nonsex chromosomes are called autosomes. |
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Definition
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Term
| If yellow and round phenotypes in peas are dominant, you know the genotype of all peas are green and wrinkled. |
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Definition
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Term
The symbol indicates:
0-[] |
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Definition
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Term
| ___ is fertilization when both egg and pollen come from the same plant |
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Definition
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Term
| Multifactorial inheritance is when a phenotype arises as a result of multiple genes interacting with each other and/or the environment |
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Definition
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Term
| A YY or yy genotype is called heterozygous |
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Definition
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Term
| Dihybrind test crosses are made between each pairwise combination of the 3 genes O,P and Q with the following results, you wish to use the chi square test chi determine whether O and P are linked which set of data would you use? |
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Definition
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Term
| Which of the following events occur during mitosis but not during meiosis? |
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Definition
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Term
| What happens physically during the process of crossing over? |
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Definition
| Two homologues chromatids break and rejoin at precisely the same site along the chromosome so that there is no loss or gain of material on either product |
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Term
| recombination due to crossing over occurs only rarely in mitosis? (T/F) |
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Definition
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Term
| Suppose a 3 point test cross was conducted involving the genes ABC if the most abundant classes are ABc and abC and the rarest classes are aBC and Abc, which gene is in the middle? |
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Definition
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Term
| The complementary sequence of 5AATTCGCTTA3 is |
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Definition
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Term
| The chromosomal structure to which spindle fibers attach during the mitotic division is referred to as a |
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Definition
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Term
| If 25% of the bases in a region of the mouse genome are cytosine, what % in that region are adenine? |
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Definition
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Term
| The period between cell cycles is called interphase |
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Definition
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Term
| Meselson and Stahl relied on equilibrium density gradient centrifugation in a _ solution to resolve the DNA containing N14 from N15 |
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Definition
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Term
| the measured distance between genes D and E in a two point test cross is 50 map units, what does this mean in physical terms? |
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Definition
| Either D and E are on different pairs of chromosomes or D and E are linked at least 50 map units apart |
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Term
| Two genes are considered linked when F2 progeny more commonly show the recombinant genotype |
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Definition
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Term
| How many replication forks depart from an origin of replication in eukaryotic cells? |
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Definition
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Term
| Drosophila has four pairs of chromosomes. Sperm from thesis are formed by meiotic process in which homologous chromosome pair and segregate but do not undergo crossing over. How many genetically different kinds of sperm could be produced by drosophilia male? |
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Definition
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Term
| compared to SMOOTH streptococcus, ROUGH streptococcus has a mutation which makes it less virulent |
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Definition
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Term
| recombination events are limited to only "hot spots" along a chromosome |
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Definition
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Term
| At which of the following stages of meiosis would homologous chromosomes be paired? |
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Definition
| both prophase and of meiosis 1 and metaphase or meiosis 1 |
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Term
| chiasmata can be seen through a light microscope and are sites of recombination |
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Definition
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Term
| Recombination involves the breakage and reunion of DNA molecular from |
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Definition
| Homologous NONSISTER chromatids |
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Term
| what radiolabeled substance did Hershey and Chase use to label the protein component of the bacteriophage in their study to determine whether protein or DNA was necessary for phage production |
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Definition
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Term
| If one observes flower colors of white, pink and red, that would indicate codominant inheritance |
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Definition
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Term
| Duplications of the genes, followed by mutation, is responsible for the formation of _____ |
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Definition
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Term
| To brush the pollen from one plant onto the female organ of another plant, thereby creating offspring with the particular traits of the selected plants is _____ |
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Definition
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Term
| In a monohybrid cross between a homozygous dominant individual and a homozygous recessive individual (both P), what proportion of the homozygotes(or heterozygotes) is expected among the F2 offspring? |
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Definition
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Term
| The first offspring from the parents is/are called |
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Definition
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Term
| Genes with more than one type of allele are termed polymorphic |
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Definition
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Term
| The phenotypic ratio 3:1 may indicate |
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Definition
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Term
| The phenomenon of a single gene determining a number of distinct and seemingly unrelated characteristics is known as pleiotropy |
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Definition
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Term
| DNA arrays/chips allows one to examine gene expression, whereas DNA sequencing does not allow one to examine gene expression |
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Definition
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Term
| If the parents of a family already have two boys, what is the probability that the next two offspring will be girls? |
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Definition
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Term
| Mendel's law of segregation states that two alleles for each trait unite in a specific manner during gamete formation and therefore give rise to predictable observable traits. |
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Definition
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Term
| An alternative form of a single gene is known as |
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Definition
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Term
| When a late blooming pea and an early blooming pea are crossed, an intermediate phenotype occurs. This results in blending |
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Definition
False
(incomplete dominance) |
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Term
| The Bombay phenotype is an example of |
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Definition
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Term
| Mutations are a source of new alleles |
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Definition
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Term
| Crosses in which the male and female traits are reversed, thereby controlling whether a particular trait is transmitted by the egg or pollen are known as_____ |
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Definition
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Term
| An allele that expresses its phenotype even when heterozygous with a recessive allele is termed |
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Definition
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Term
| A phenotype reflecting a new combination of genes occurring during gamete formation is called |
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Definition
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Term
| Which of the following ratios show incomplete dominance and codominance? |
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Definition
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Term
| In the Hershey and chase Blender experiment designed to determine the macromolecule of heredity, where was the majority of radioactive sulfur found? |
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Definition
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Term
| Pyrimidine's are Nitrogenous base contain a double ring, while purines contain a dingle ring |
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Definition
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Term
| Viruses use only DNA as their genetic material |
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Definition
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Term
| chromosomal interference is not uniform and may significantly vary within a region of a single chromosome |
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Definition
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Term
| Which scientist determined nucleotide ratio in DNA? |
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Definition
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Term
| Red green color blindness is controlled by an X chromosomal gene in human. A normal man and a normal woman whose father are both color blind marry. What is the probability of their first child will be color blind? |
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Definition
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Term
| crossing over between homologous chromosomes occur at which of the following states of meiosis? |
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Definition
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Term
| Crossing over between homologues chromosomes occurs at which of the following states of meiosis |
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Definition
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Term
| humans have 22 pair of autosomes plus one sex chromosome pair. How many autosomes are present in a normal human primary spermatocyte? |
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Definition
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Term
| genes chained together by linkage relationships are known collectively as linkage groups |
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Definition
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Term
| chromosomes attach to microtubules through linkage groups |
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Definition
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Term
| what process of meiosis do we see Mendel's two laws played out? |
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Definition
1) Law of segregation: Anaphase 1
2) Law of Independent assortment: Meta phase 1 |
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Term
| In complementary gene action, recessive alleles of two or more genes are required to generate a particular trait |
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Definition
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Term
| In a monohybrid cross between parents Aa x Aa, (both P) what proportion of heterozygotes is expected among the F1 offspring? |
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Definition
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Term
| Which of the following lines produce offspring that carry a specific parental traits that remain constant from generation to generation? |
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Definition
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Term
| The second generation of offspring from the parents are called |
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Definition
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Term
| During gamete formation, different pairs of alleles on different chromosomes segregate independently of each other |
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Definition
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Term
| In the dihybrid cross AABB x aabb (both P generation), what proportion of heterozygotes for both gene pairs is expected among the F2 offspring? |
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Definition
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Term
| The actual alleles present in an individual make up the individual's |
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Definition
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Term
| The punnett square was introduced by a geneticist named punnett and provide a simple and convenient method of tracking possible combination of gametes that might be produced in a given cross |
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Definition
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Term
| A rare dominant trait in a pedigree is indicated by which pattern of inheritance? |
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Definition
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Term
| In incomplete dominance, F1 hybrids show the traits of both parents |
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Definition
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Term
| A person who has type O blood has |
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Definition
| both anti-A and anti-B antibodies |
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Term
| On a pedigree chart, a colored square indicates a ____. |
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Definition
| male with the disorder being studied |
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Term
| A Yy genotype is called heterozygous |
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Definition
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Term
| During gamete formation, different pairs of alleles on different chromosomes assort independently of each other |
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Definition
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