Term
| The most obvious and common way that meiosis can lead to genetic variation is by |
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Definition
| creating new combinations of alleles at different loci |
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Term
| If the percent recombination between two loci is 4%, the centiMorgan value will be |
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Definition
| The same as the percent recombination |
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Term
| If the percent recombination between two loci is 30%, the centiMorgan value will be |
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Definition
| Larger than the percent recombination |
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Term
| If the distance (expressed as percent recombination) between two loci is 9%, what is the most correct answer in terms of expectations for a double crossover occurring between these loci? Assume complete interference |
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Definition
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Term
| All types of crossovers (e.g. single crossovers, three-strand double crossovers, and four strand double crossovers) between two linked loci give rise to gametes that are 50% parental in terms of allele combinations at the two loci. |
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Definition
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Term
| The high rates of recombination between X and Y chromosomes account for the presence of functional male and female reproductive organs in perfect flowers |
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Definition
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Term
| A number of resources on the web, including the Kew Gardens site, allow you to access information on genome size in base pairs and/or picograms. Given this information, you can determine the exact total linkage map length in centiMorgans by using the appropriate conversion factor. |
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Definition
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Term
| A comparative analysis of the DNA sequence of the BAD2 genes of rice and maize reveals that the two genes are so similar that they are hypothesized to have evolved from a common ancestral gene. This is best described as an example of |
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Definition
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Term
| You determine that the linkage maps of Fragaria and Prunus have blocks of the same loci in the same order but have different numbers of chromosomes. This is an example of |
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Definition
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Term
| Which of the following best describes DNA: |
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Definition
| deoxyribose, information in codons, occasional errors in replication |
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Term
| The replication of DNA at the S phase of meiosis is |
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Definition
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Term
| During the S phase of mitosis in a plant with a haploid genome size of 5 x 109 bp, each chromosome is replicated from one bidirectional origin, which is located at the centromere. |
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Definition
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Term
| In a deoxyribonucleotide, 5’ and 3’ refer to the carbons where (respectively) the phosphate and hydroxyl groups are attached. |
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Definition
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Term
| Which of the following statements is true? |
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Definition
Adenine and guanine are purines
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Term
| Which of the following is most correct in terms of describing the chemical bonds that form the DNA double helix |
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Definition
| There are phosphodiester bonds between nucleotides and hydrogen bonds between nitrogen-containing bases |
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Term
| DNA is an ideal genetic material because it is capable of change. A heritable change in DNA sequence is best described as an: |
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Definition
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Term
| DNA polymerase synthesizes new deoxyribonucleotide chains in which direction? |
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Definition
| 5’ to 3’ in both the leading strand and the lagging strand |
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Term
| The RNA primers that initiate DNA replication in the S phase of mitosis |
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Definition
| are eventually removed and replaced with the corresponding DNA nucleotides |
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Term
| Certain DNA polymerases can have a “proof-reading” function in which they can remove mismatched bases in at the 3’ end of a developing strand |
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Definition
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Term
| Telomerase is an enzyme that |
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Definition
| Adds nucleotides to telomeres |
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Term
| Which of the following elements of a gene best describes the promoter? |
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Definition
| Binding site for RNA polymerase |
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Term
| Which of the following elements of a gene best describes the coding sequence? |
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Definition
| Region between start codon and stop codon |
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Term
| Which of the following elements of a gene best describes the 3’UTR? |
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Definition
| Region between stop codon and transcription termination signal |
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Term
| Transcription of genes in any of 2n = 32 chromosomes of Opuntia indica occurs in the |
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Definition
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Term
| Where would you most likely see active transcription of genes? |
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Definition
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Term
| Examples of functional RNAs include |
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Definition
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Term
| In contrast to DNA, all RNA molecules are single stranded at all times |
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Definition
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Term
| Leading strands in DNA replication are not necessarily template strands in transcription |
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Definition
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Term
| In the assigned reading on sequencing the genome of woodland strawberry (2n = 2x = 14), the authors report that they identified 569 tRNA genes. This is evidence that in this species has |
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Definition
| multiple copies of the genes that encode different tRNAs |
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Term
| In eukaryotes, the coding regions of mature mRNAs, as compared to primary transcripts, are usually |
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Definition
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Term
| In the process of translation, the ribosome moves |
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Definition
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Term
| . If you know the amino acid sequence of a polypeptide you can deduce the exact DNA code of the corresponding gene. |
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Definition
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Term
| In the case of a codominant molecular marker visualized via electrophoresis, the expected phenotypic ratio in the doubled haploid progeny of the cross between two completely inbred lines will be |
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Definition
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Term
| In the case of partial dominance, visualized as an intermediate phenotype in heterozygotes, the expected ratio in the F2 progeny of a cross between two completely inbred lines will be |
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Definition
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Term
| At several points in this class, the point has been made that “Expected and observed ratios in cross progeny will be a function of: …………..” This statement is followed by a list of factors (a – e below). Which of the five factors best describes epistasis? |
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Definition
| The degree of interaction between genes |
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