Unit: Heredity
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Which of the following is the best prediction for the frequency of brown seeds that would result from this cross?
0.00
Which of the following is the best prediction for the frequency of wrinkled seeds that would result from this cross?
0.25
Based on the data in the table, which of the following is the correct order of genes on the chromosome?
Gene B, Gene C, Gene A, Gene D
Which of the following correctly describes meiosis?
Meiosis begins with a diploid parent cell and ends with four haploid daughter cells.
Which of the following correctly describes how mitosis and meiosis are different?
Mitosis produces genetically identical daughter cells, while meiosis produces genetically unique daughter cells.
Which of the following statements describes an example of phenotypic plasticity?
Nodilittorina australis snails with the same genotype can have either white or brown shells depending on the steepness of their rocky shore habitat.
If the male and female mate, which of the following will be true about their offspring?
None of the offspring will have a parental genotype.
Which of the following correctly describes how meiosis I and meiosis II differ?
Pairs of homologous chromosomes are separated during meiosis I, while sister chromatids are separated during meiosis II.
Which of the following experiments will provide the most direct evidence to support the researcher's claim?
Raising caterpillars of the same genotype under controlled conditions that differ only in the caterpillars' food source
Which of the following best explains how the random alignment of homologous chromosomes during meiosis helps generate varied offspring?
Random alignment increases the number of possible chromosome combinations in the gametes.
Of the following events that occur during meiosis, which contributes most to genetic diversity in the human population?
Recombination between homologous chromatids during meiosis I
If the male and female mate, which of the following will be true about their offspring?
Roughly half of the offspring will have a different genotype than either parent.
Which of the following best describes how this gene is inherited from parents to offspring?
The allele for yellow is an autosomal recessive allele because a 3:1 phenotypic ratio of blue-to-yellow is observed in cross 2
What will be the most likely effect of the chromosomal rearrangement on an embryo formed by the fertilization of Gamete 2?
The embryo will have lower-than-normal levels of the Gene H protein product in its cells.
Which of the following best represents the types and frequencies of gametes formed when cells like this one undergo meiosis?
rq/25% RQ/25% rQ/25% Rq/25%
Which of the following pedigrees shows a likely pattern of inheritance in a family with a history of Huntington's disease?
white square-black cir white square-black square---white square----black cir white square
Which of the following pedigrees shows a likely pattern of inheritance in a family with a history of fragile X syndrome?
white-cir-black sq white cir-white sq---black cir---white sq---black cir-white sq
If the cell undergoes meiosis, which of the following is true regarding the allele combinations in the resulting gametes?
Allele combination AB is just as likely to occur in a gamete as allele combination Ab is.
Which of the following statements describes an example of phenotypic plasticity?
An arctic fox is brown in summer and white in winter.
Which of the following statements describes an example of phenotypic plasticity?
Desert locusts with the same genotype develop into solitary or swarming forms depending on the density of individuals in their surroundings.
Which of the following best explains the stem lengths seen in the offspring?
Dwarf stem length is a recessive trait.
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At the beginning of meiosis I, a female wallaby germ cells contains
5 homologous pairs of chromosomes comprising a total of 20 chromatids
Which of the following statements describes an example of phenotypic plasticity?
A person's skin darkens in the sun due to the effect of UV light on melanin production.
Which of the following statements describes an example of phenotypic plasticity?
A semi-aquatic plant produces large, thin submerged leaves and small, thick aerial leaves.
Which of the following statements is true regarding the gametes formed when cells like this one undergo meiosis?
Gametes with alleles G and H occur at the same frequency as gametes with alleles g and H.
For which pair of genes is the recombination rate the highest?
Gene B and Gene D
If the male and female mate, which of the following will be true about their offspring?
Roughly half of the offspring will have a non-parental genotype.
Which of the following correctly describes how mitosis and meiosis are similar?
Sister chromatids segregate to opposite poles of the cell during both mitosis and meiosis.
Based on the data in the table, which of the following statements best explains the inheritance pattern seen for the body color trait?
The allele for an orange body is an X-linked recessive allele because Cross 1 produced zero tan males and zero orange females.
Which of the following best describes the mechanism of inheritance of the gene?
The allele for green is an autosomal recessive allele because a 3:1 phenotypic ratio of red-to-green is observed in cross 1.
Which of the following correctly describes the number of chromosomes in the daughter cells produced during gametogenesis in fruit flies?
The daughter cells each contain four chromosomes after meiosis I and four chromosomes after meiosis II.
Which of the following statements best explains the difference between the expected and observed results of the cross?
The ebony and antennapedia genes are near each other on the same chromosome.
If Gamete 2 is fertilized, how will the nondisjunction event affect the resulting embryo?
The embryo will have higher-than-normal levels of the Gene A protein product in its tissues.
What will be the most likely effect of the chromosomal rearrangement on an embryo formed by the fertilization of Gamete 3?
The embryo will have higher-than-normal levels of the Gene P protein product in its tissues.
Based on the karyotype, which of the following statements is most likely true?
The individual has a genetic condition caused by a chromosomal deletion.
Based on the karyotype, which of the following statements is most likely true?
The individual has a genetic condition caused by the nondisjunction of chromosomes during meiosis.
Based on the information above, which of the following statements is true?
The switch to polarized growth is due to changes in gene expression induced by a signal from a yeast cell's environment.
Based on the information above, which of the following statements is most likely true about the coat color transition in snowshoe hares?
The transition from a brown to a white coat is the result of gene expression changes induced by autumn daylengths.
Which of the following statements describes an essential part of the researcher's experimental design?
The water fleas used in the experiment must all have the same genotype.
Which of the following statements describes an example of phenotypic plasticity?
Two stems cut from a single Hydrangea macrophylla plant grow to have pink or purple flowers depending on soil pH.
Which of the following best explains the flower colors seen in the offspring?
White flower color is a trait recessive to purple flower color.
Which of the following is the genotype of the circled individual in generation II?
X^H X^h
Based on the karyotype, which of the following statements is most likely true?
the individual has a genetic condition caused by a chromosomal duplication
Which of the following pedigrees shows a likely pattern of inheritance in a family with a history of cystic fibrosis?
white sq-black cir white sq-white cir---white sq---white sq-white cir
What proportion of the resulting offspring is expected to be male with barred feathers and a pea comb?
approximately 1/2
Which of the following pedigrees represents a likely pattern of inheritance for a family with a history of MIDD?
black cir-white sq white cir-black sq---black cir---black sq---black cir-white sq
Which of the following pedigrees represents a likely pattern of inheritance for the mutation described above?
black o-white sq white o-black sq--black o--black sq
Based on the information above, which of the following comparisons should the scientists use for the experiment?
genetically male embryos incubated at 30°C compared to genetically male embryos incubated at 36°C
Which of the following crosses will result in chicks whose sex can be determined based on their feathering speed phenotype?
a cross between a slow-feathering female and a fast-feathering male
The pedigree suggests that the gene for the trait is on a nuclear chromosome, and not on mitochondrial DNA, because
a female in generation III inherited the trait from her affected father
