Non-Mendelian Genetics Knowledge Check

Which of the following statements is true regarding non-Mendelian genetics?

• It strictly follows the principles of dominance.

• It only involves the inheritance of traits from a single gene.

• It encompasses a variety of inheritance patterns that do not conform to Mendel's laws.

• It does not involve the interaction of genes.

Which of the following genetic inheritance patterns results in an intermediate phenotype between the two homozygous phenotypes?

• Incomplete dominance

• Codominance

• Multiple alleles

• Complete dominance

In codominance, what happens to the alleles in the heterozygous genotype?

• One allele is completely dominant over the other.

• Both alleles are fully expressed.

• One allele is recessive.

• Both alleles are suppressed.

Which of the following is an example of multiple alleles in humans?

• Eye color

• Hair color

• ABO blood group system

• Skin color

Polygenic inheritance occurs when:

• A trait is controlled by multiple genes

• Only one gene controls a trait

• A trait is controlled by a single allele

• Traits are inherited according to Mendel's laws

In the ABO blood group system, which alleles are codominant to each other?

• I^A and i

• I^B and i

• I^A and I^B

• I^A and i

In incomplete dominance, one allele completely masks the expression of the other allele.

• True

• False

Multiple alleles refer to the existence of only two possible alleles for a particular gene. True or False.

• True

• False

Traits controlled by polygenic inheritance tend to show a wide range of phenotypes.

• True

• False

In a population of rabbits, black fur (BB) is incompletely dominant over white fur (bb), resulting in gray fur (Bb) in heterozygous individuals. If two gray-furred rabbits are crossed, what is the probability of producing white-furred offspring? Use the Punnett squares to show your work. The probability is: ____________

• 0%

• 25%

• 50%

• 75%

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