1) Genomic imprinting leads to non-Mendelian inheritance because in genomic impr

Question

1) Genomic imprinting leads to non-Mendelian inheritance because in genomic imprinting

a. the allele pairs controlling a trait do not assort independently.

b. the expression of an allele varies depending on which parent it was inherited from.

c. the alleles at one gene locus hide or prevent the expression of alleles at a second gene locus.

d. the expression of an allele varies depending on whether the individual is homozygous or heterozygous.

e. the expression of an allele varies depending on whether the individual is male or female.

2) A potato has a diploid number of 48. If an egg of this plant has 23 chromosomes, the most likely explanation is that

a. normal meiosis has occurred.

b. nondisjunction occurred during meiosis I.

c. normal mitosis has occurred.

d. Nondisjunction occurred during mitosis.

e. crossing over occurred during meiosis I.

3) Assuming complete dominance, the F1 generation of the monohybrid cross purple (PP) x white (pp) flower pea plants should

a. All have white flowers

b. All have a light purple or blended appearance

c. All have purple flowers

d. Have ¾ purple flowers and ¼ white flowers

4) An organism’s _________ is determined by its __________.

a. genotype; phenotype

b. phenotype; genotype

c. alleles; phenotype

d. genes; alleles

Explanation / Answer

1.b. the expression of an allele varies depending on which parent it was inherited from. geneomic imprinting leads to expression of the traits like deletion of 5p- anglemans syndrome prader wills syndroem ============== 2.b. nondisjunction occurred during meiosis I. non disjunction leads to abnormal gametes ================== 3c. All have purple flowers because of dominance of the allele leads to alll offsprings are purple ================ 4b. phenotype; genotype genotype is responsible for expression of traits

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