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40 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Which of the following is NOT a membrane-bound organelle in the cell?
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a)endoplasmic reticulum
b) mitochondria c)golgi d)nucleus e)nucleolus |
answer: e)nucleolus
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Paired chromosomes that are alike in size and shape and the genes they carry are said to be:
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a)diads
b)diploids c)homologues d)monads e)haploids |
answer: c)homologues
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Which of the following statements is FALSE?
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a)haploid cells will never have diad chromosomes
b)N v. N2 refers to cells c)Monad v. Diad refers to chromosomes d)Haploid v. Diploid refers to cells e)The Chromatin Network is one of the forms the genetic material takes |
answer: a)haploid cells will never have diad chromosomes
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The point-for-point contact between alleles at identical loci on homologous diads at the beginning of _meiosis_ is called:
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a)crossing over
b)chromatin contact c)chiasmata d)synapsis e)linkage |
answer: d)synapsis
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The equal exchange of alleles between homologous diads during synapsis is called:
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a)transformation
b)crossing over c)chiasmata d)synapsis e)meiosis I |
answer: b)crossing over
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The duplication of the genetic material (DNA) takes place in:
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a)anaphase
b)prophase c)interphase d)telophase e)metaphase |
answer: c)interphase
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All of the following would be represented in the process of mitosis EXCEPT:
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a)diploid cells to haploid cells
b)diploid cells to diploid cells c)mother cell to daughter cells d)one cell to two cells e)diads to monads |
answer: a)diploid cells to haploid cells
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If diploid germinal cells containing 32 diad chromosomes underwent meiosis, the resulting gametes would contain how many chromosomes?
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a)4
b)8 c)16 d)32 e)64 |
answer: c)16
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Monad chromosomes line up on the equatorial plate prior to cell/nuclear division:
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a)during mitosis I
b)during mitosis II c)during meiosis I d)during meiosis II e)they never do |
answer: e)they never do
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Garden peas were a great choice for Mendel for all of the following reasons EXCEPT:
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a)Their flowers contained male parts or female parts, but not both together
b)they were easy to grow c)there were lots of true breeding varieties available commercially d)they were of a reasonable height (.5-1m tall) e)their characteristics could easily be studied macroscopically. |
answer: a)Their flowers contained male parts or female parts, but not both together
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Which of the following is FALSE:
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a)"Tt" implies a dihybrid
b)genotype refers to the alleles possessed c)true breeding implies homozygosity d)homozygous implies the same alleles as in TTYY e)phenotype is the appearance of a trait. |
answer: a)"Tt" implies a dihybrid
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Assume a Mendelian cross in garden peas of a round, yellow seeded parent times a wrinkled, green seeded parent, where both ROUND and YELLOW seeds are DOMINANT traits. Both parents are homozygous at both loci. Out of 160 F2 plants that were raised, about how many would have round, green seeds?
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a)10
b)16 c)30 d)60 e)90 |
answer: c)30
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Which is FALSE?
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a)mutation rate is the number of mutations per cell generation at a particular locus.
b)we have a brand new mutation in about half of each of the gametes we produce c)the average human mutation rate is about 1 in 100,000 loci/genes d)human gametes carry about 50,000 alleles e)there are more different kinds of nucleotides in DNA than there are different kinds of amino acids in proteins. |
answer: e)there are more different kinds of nucleotides in DNA than there are different kinds of amino acids in proteins.
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In the experiments proving the origin of present-day bread wheat, two grasses with 14 chromosomes were crossed producing a new variety of plant with 28 chromosomes. This intermediate plant would be:
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a)diploid
b)tertaploid c)hexaploid d)polyploid e)more than one of these is correct |
answer: e)more than one of these is correct
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In horses, black color is dominant to chestnut, and trotting gait is dominant to pacing gait. In the mating of two dihybrids, what fraction of the colts would likely be black trotters?
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a) 1/16
b) 3/16 c) 1/4 d) 9/16 e) 3/4 |
answer: d) 9/16
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Color blindness in humans is due to a recessive, sex-linked allele. What is the probability that a normal-visoned man and a colorblind woman would have a colorblind daughter?
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a)0
b)1/4 c)1/2 d)3/4 e)100% |
answer: a)0
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Individuals who should routinely seek genetic counseling before having children would include all of the following EXCEPT those who:
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a)have a history of miscarriages
b)have survived near-fatal carbon monoxide poisoning c)have a genetic relative with a genetic disorder d)are members of a relatively small gene pool e)are of a relatively advanced reproductive age |
answer: b)have survived near-fatal carbon monoxide poisoning
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Two mated pink snapdragron plants would likely have which of the following flower colors among their offspring?
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a)red
b)pink c)white d)all of these flower colors e)only pink and white colors. |
answer: d)all of these flower colors
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Which of the following is FALSE?
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a)the law of independence is an exception to the law of segregation
b)linkage is an exception to the law of independence c)crossing over (CO) is an exception to linkage d)CO is a mechanism of genetic recombination e)CO mixes up the hereditary material |
answer: a)the law of independence is an exception to the law of segregation
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An aneuploid would be the result of, or caused by:
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a)mutations
b)translocations c)inversions d)nondisjunction e)deletions |
answer: d)nondisjunction
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Which of the following statements is FALSE?
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a)the sequence of nucleotides in DNA codes for the sequence of amino acids in a protein.
b)a mutation is a change in a gene which leads to a change in the protein it is coding for c)mutation rate is the number of mutations per cell generation at a particular locus d)the average human mutation rate is about 1 in 1000 loci/genes e)about 1 in 2 human gametes has a newly mutated gene at one of its loci. |
answer: d)the average human mutation rate is about 1 in 1000 loci/genes
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Which is FALSE about Mendelian inheritance?
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a)the inheritance of one trait is independent of the inheritance of another trait.
b)Mendel described two laws of inheritance. c)the ratio of offspring in a monohybrid cross is the product of the ratios of the offspring in the two independent dihybrid crosses. d)the ratio of phenotypes in a dihybrid cross is 9:3:3:1 e)the ratio of genoytypes in a monohybrid cross is 1:2:1 |
answer: c)the ratio of offspring in a monohybrid cross is the product of the ratios of the offspring in the two independent dihybrid crosses
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Assume that in crossing F1 hybrid round, yellow graden peas, Mendel got 1200 F2 individual pea plants. Of these, how many would be expected to be wrinkled?
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a)100
b)300 c)400 d)600 e)800 |
answer: b)300
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All of the following were necessary conditions in explaining Mendel's interpretation of genetics EXCEPT:
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a)each individual possesses two factors for each trait
b)only one of these factors goes to the offspring c)the chance that the offspring receives either of these parental factors is equal d)the traits are controlled by the blending of the genetic information. e)one factor is dominant over another. |
answer: d)the traits are controlled by the blending of the genetic information.
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An individual with different alleles at a single locus is said to be:
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a)heterozygous
b)recessive c)a hybrid d)dominant e)more than one of the above |
answer: e)more than one of the above
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Which of the following matings could potentially produce a child with type O blood?
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a) AB x O
b)A x B c)O x B d)AB x A e)Both B and C are possibilities |
answer: e)Both B and C are possibilities
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All of the following would be Meristic traits EXCEPT:
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a)flower color in garden peas
b)seed shape in garden peas c)albinism in humans d)skin color in humans e)red-green coloblindness in humans |
answer: d)skin color in humans
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A person with the genotype AaBbCc would be able to produce, normally, which of the following types of gametes?
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a) AaB
b AbB c) bBc d) AbC e) BcC |
answer: d) AbC
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Which is FALSE? Crossing over...
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a)is an exception to Mendel's law of segregation
b)is a natural process c)increases the number of different gametes d)breaks apart linkage groups e)is an adaptive process |
answer: a)is an exception to Mendel's law of segregation
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Which is FALSE?
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a) nondisjunction is due to faulty mitosis
b) nondisjunction can result in aneuploidy c)aneuploids have extra (or missing) chromosomes d)in nondisjunction, homologous chromosomes do not separate properly during meiosis e)down's syndrome is a result of aneuploidy. |
answer: a) nondisjunction is due to faulty mitosis
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Mutation rates depend on all of the following EXCEPT:
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a)the species
b)the presence of x-radiation c)the sex of the individuals d)the presence of mutagenic agents e)the temperature |
answer: c)the sex of the individuals
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The sum of all alleles at all loci in all germinal cells of all reproductive individuals of a population would characterize:
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a)systematics
b)biogeography c)gene pool d)population ecology e)population genetics |
answer: c)gene pool
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For the Hardy-Weinberg equilibrium to hold, all of the following conditions must be met EXCEPT:
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a)non-random mating
b)no net immigration c)no net emigration d)large population e)no net mutation |
answer: a)non-random mating
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If the allele "A" for rollers is dominant to "a", non rollers, in the population and 96% of the people are rollers, what is the frequency of the "A" allele?
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a) 0.2
b) 0.4 c) 0.6 d) 0.8 e) 1.2 |
answer: d) 0.8
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If coat color in mink is controlled at a single locus with a dominant allele for dark color and a recessive allele for tan color and the population consists of 36% homozygous dominant individuals, what is the per cent of heterozygous individuals in the population?
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a) 16
b) 24 c) 32 d) 48 e) 64 |
answer: d) 48
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Genetic change influencing evolution exists in all of the following EXCEPT:
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a) alleles
b) communities c) chromosomes d) DNA e) populations |
answer: b) communities
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Assume that you sampled 10,000 individuals in a population and found that 144 of them expressed a simple Mendelian recessive trait. What is the frequency of the dominant allele in this population?
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a) 0.12
b) 0.24 c) 0.36 d) 0.72 e) 0.88 |
answer: e) 0.88
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The terms that would most appropriately describe the population (changes) of the elephant seals along the western coast of North America from the early 1900s until today would be:
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a)random mating
b)founder effect c)bottleneck effect d)large population e)genetic drift |
answer: c)bottleneck effect
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In very small populations, chance events may cause large changes in gene frequencies. This is called:
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a) random roulette
b) bottleneck effect c) genetic drift d) founder effect e) genetic equilibrium |
answer: c) genetic drift
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Changes in gene frequencies in populations over time would describe:
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a) evolution
b) non-mendelian genetics c) population genetics d) population ecology e) systematics |
answer: a) evolution
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