A) a multifactorial trait.
B) polygenic inheritance.
C) pleiotropy.
D) codominance.
E) incomplete dominance.
Correct Answer
verified
Multiple Choice
A) Breed the snake with a heterozygous female.
B) Breed the snake with a homozygous normal female.
C) Breed the snake with a female sibling.
D) Breed the snake with a homozygous recessive albino female.
E) He can breed the snake with any female and a portion of the offspring will always be albino.
Correct Answer
verified
Multiple Choice
A) Sickle cell disease
B) Marfan syndrome
C) Huntington disease
D) Phenylketonuria (PKU)
E) Cystic fibrosis (CF)
Correct Answer
verified
Multiple Choice
A) Her mother must be colorblind.
B) Both her parents must be colorblind.
C) Both her parents are carriers of the recessive allele.
D) Her father must be colorblind.
E) Women cannot exhibit red-green colorblindness because they have two X chromosomes.
Correct Answer
verified
Multiple Choice
A) A and C alleles are closer together than the a and c alleles.
B) the order of the alleles on one homologous chromosome is A,B,C.
C) alleles a and c are closer together than alleles c and b.
D) a recombinant gamete would contain alleles A,B,and C.
E) crossing over often occurs between sister chromatids.
Correct Answer
verified
Multiple Choice
A) True because according to the laws of probability, at least one of the offspring should have been an albino.
B) True because 50% of all offspring produced must be albino.
C) False because for each offspring there is a 50% chance that it will have normal pigmentation.
D) False because a heterozygous male will only pass the dominant allele to its offspring.
E) True because if at least one parent is homozygous recessive, at least one of their offspring must also show the recessive trait.
Correct Answer
verified
Multiple Choice
A) incomplete dominance.
B) codominance.
C) dominance/recessive trait.
D) polygenic.
E) pleiotropy.
Correct Answer
verified
Multiple Choice
A) four
B) three
C) two
D) one
E) five
Correct Answer
verified
Multiple Choice
A) physical expression of a trait - phenotype
B) allele that masks the expression of an alternate allele - dominant
C) identical alleles - heterozygous
D) allele whose expression can be masked by an alternate allele - recessive
E) the specific alleles that an individual has - genotype
Correct Answer
verified
Multiple Choice
A) All of his children will always inherit the disease.
B) He will pass this disease to all of his daughters.
C) There is at least a 50% probability that his children will inherit the disease.
D) There is a 100% possibility that his sons will inherit this disease.
E) None of his children will inherit the disease unless his wife also has the disease.
Correct Answer
verified
Multiple Choice
A) AAGg
B) freckles
C) AA
D) Ag
E) Gg
Correct Answer
verified
Multiple Choice
A) sex-linked recessive
B) sex-linked dominant
C) co-dominance
D) polygenic
E) pleiotropic
Correct Answer
verified
Multiple Choice
A) One factor must be dominant and one factor recessive in each individual.
B) Each individual contains two factors for each trait.
C) Factors separate from each other during gamete formation.
D) Each gamete contains one copy of each factor.
E) Fertilization restores the presence of two factors.
Correct Answer
verified
Multiple Choice
A) incomplete dominance; a sex-linked trait.
B) complete dominance; polygenic trait.
C) codominance; homology.
D) incomplete dominance; codominance.
E) a sex-linked trait; a recessive trait.
Correct Answer
verified
Multiple Choice
A) 1
B) 2
C) 3
D) 4
E) 5
Correct Answer
verified
Multiple Choice
A) 1
B) 2
C) 4
D) 8
E) 16
Correct Answer
verified
Multiple Choice
A) Each individual has 2 factors for each trait.
B) Genes segregate during gamete formation.
C) Gametes contain only 1 gene from each pair.
D) During fertilization, each new individual obtains 2 genes for each trait.
E) Each gamete contains 2 genes for each trait.
Correct Answer
verified
Multiple Choice
A) 0%
B) 25%
C) 50%
D) 75%
E) 100%
Correct Answer
verified
Multiple Choice
A) 0%
B) 25%
C) 50%
D) 75%
E) 100%
Correct Answer
verified
Multiple Choice
A) the numbers of individuals with each version of a trait.
B) all possible combinations of gametes based on a cross between the two parents.
C) an exact ratio that must always occur when the same parents have 4 offspring.
D) examples of some of the offspring that can arise from a one-trait cross.
E) the gametes from one parent.
Correct Answer
verified
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