Term
| Which of the following is an example of multiple alleles? |
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Definition
| the antigens that give rise to different human blood types |
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Term
| The function of codons is to |
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Definition
| specify the amino acid sequence of a protein during translation. |
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Term
| Which of the following is an example of polygenic inheritance? |
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Definition
| the genes that control human skin color |
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Term
| Which of the following best describes the function of RNA polymerase? |
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Definition
| It causes mRNA to elongate during transcription |
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Term
| Which of the following statements best describes a telomere? |
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Definition
| It is a portion of DNA attached to the end of chromosomes which does not contain genes. |
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Term
| An abnormal condition called polyploidy occurs when: |
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Definition
| Cells receive an entire extra set of chromosomes during meiosis. |
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Term
| If a single point mutation occurs in a cell, which of the following is likely to happen? |
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Definition
| DNA repair enzymes will fix the damage to produce a normal gene |
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Term
| Which of the following best defines a codon? |
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Definition
| a sequence of three nucleotides that designates a specific amino acid |
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Term
| Which of the following is true of mutagens? |
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Definition
| They interact with DNA in ways that bring about mutations |
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Term
| The function of the DNA promoter region is to |
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Definition
| bind RNA polymerase, thus initiating transcription. |
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Term
| Which of the following is an autosomal dominant disorder? |
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Definition
|
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Term
| A point mutation occurs when: |
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Definition
| A single base pair within a gene is changed to a different base pair. |
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Term
| If a cell accumulates a large number of mutations, it will probably |
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Definition
|
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Term
| Which of the following is a way in which the gene expression of prokaryotes differs from that of eukaryotes? |
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Definition
| In prokayotes, translation can occur while transcription is still in progress |
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Term
| Which of the following is true of mutations? |
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Definition
| A mutation is any change within the genetic material of a cell (in the germ line or the somatic cells). |
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Term
| In the lactose operon of bacteria, what does the operator do? |
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Definition
| It is the region to which repressor proteins can bind. |
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Term
| Which of the following is an example of a sex-linked disorder? |
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Definition
|
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Term
| Which of the following is an example of an operon that is repressed by high levels of the end product resulting form its gene expression? |
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Definition
| the repression of genes in the trp operon |
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Term
| The role of micro RNAs in regulation of gene expression is to |
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Definition
| reduce the translation of specific proteins |
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Term
| Which of the following is a way in which the gene expression of prokaryotes is similar to that of eukaryotes? |
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Definition
| Transcription is the most important level of regulation for both prokaryotes and eukaryotes. |
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Term
| Which of the following is true of exons? |
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Definition
| They are regions of pre-mRNA that are spliced together to form mature mRNA. |
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Term
| Which of the following is contained with the core promoter region of eukaryotic DNA? |
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Definition
|
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Term
| In the lactose operon of bacteria, what does the regulator gene do? |
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Definition
| It is a DNA sequence that codes for a repressor protein which can block transcription of genes in the operon. |
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Term
| Which of the following is true of the five structural genes in the trp operon? |
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Definition
| They code for enzymes in the pathway of tryptophan synthesis. |
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Term
| In the life cycle of a flowering plant, the sporophyte plant produces |
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Definition
| microspores and megaspores by meiosis |
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Term
| Which of the following will develop into a fruit? |
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Definition
|
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Term
| Which of the following molecules can alter gene expression by reducing the translation of specific proteins? |
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Definition
|
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Term
| In reproduction of flowering plants, the function of endosperm is |
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Definition
| to provide nutrients within a seed |
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Term
| Where is primary meristem located within a growing plant |
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Definition
| near the root tip and shoot tip |
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Term
| In the life cycle of flowering plants, the haploid generation produces |
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Definition
| pollen grains and ovules. |
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Term
| Which of the following is a gametophyte? |
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Definition
| a green, leafy moss plant |
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Term
| The egg of a flowering plant is located |
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Definition
|
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Term
| Which of the following is true of fruit? |
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Definition
| It is designed to disperse seeds |
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Term
| In reproduction of flowering plants, the purpose of a pollen tube is to |
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Definition
| carry haploid nuclei to the ovule for double fertilization. |
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Term
| In a growing plant, what happens in the region located just above the root meristem? |
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Definition
|
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Term
| Which of the following is a way in which the genetic material of bacteria differs from that of eukaryotes? |
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Definition
| The circular chromosome of bacteria replicates more rapidly than eukaryotic chromosomes |
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Term
| Which of the following is a male gameotophyte? |
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Definition
|
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Term
| Which of the following is a function of the primary meristem? |
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Definition
| It produces new cells at root and shoot tips. |
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Term
| Which of the following is an example of sexual reproduction? |
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Definition
| two earthworms exchanging sperm |
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Term
| An animal that lays eggs is said to be |
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Definition
|
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Term
| Which of the following is a way in which the genetic material of bacteria is similar to that of eukaryotes? |
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Definition
| Bacteria and eukaryotes have the same genetic code. |
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Term
| Which of the following is a way in which oogenesis differs from spermatogenesis? |
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Definition
| The meiotic divisions in oogenesis produce daughter cells of unequal size. |
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Term
| The purpose of the cortical reaction is |
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Definition
| to release enzymes that harden the egg covering and destroy sperm binding sites |
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Term
| In embryonic development of birds, the function of the chorioallantois is to |
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Definition
| absorb oxygen and transport it into the embryonic body. |
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Term
| In male mammals, testosterone is secreted by the |
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Definition
|
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Term
| In the uterine cycle of mammals, which hormone promotes the glycogen secretion and blood vessel growth? |
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Definition
|
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Term
| What was the main conclusion from results in the Daphnia experiment? |
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Definition
| Sexual reproduction more effective than asexual reproduction in eliminating moderately deleterious mutations from the population. |
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Term
| Which of the following animal groups produce eggs with the least amount of yolk (relative to size of the animal)? |
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Definition
| invertebrates such as the sea star |
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Term
| In sea urchin and amphibian embryos, the blastopore is |
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Definition
| an opening into the developing gastrula |
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Term
| Which embryonic structure(s) develops from endoderm? |
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Definition
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Term
| In which of the following animal groups does the blastula stage consist of a trophoblast and inner cell mass? |
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Definition
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