Complext Patterns of Inheritance

What is the inheritance pattern when neither allele of the parents is completely dominant, resulting in a mix of parents' phenotype in the heterozygous offspring?

• Complete dominance

• Incomplete dominance

• Codominant alleles

• Multiple alleles

Which of the following is an example of codominant alleles?

• A rabbit's coat color with four possible colors

• Red snapdragons x white snapdragons resulting in pink snapdragons

• Color blindness as a sex-linked trait

• Black chicken x white chicken resulting in speckled chicken

How many pairs of chromosomes do humans have?

• 22 pairs

• 20 pairs

• 23 pairs

• 25 pairs

What are the sex chromosomes indicated by for females and males, respectively?

• Y and X

• Y and Y

• X and Y

• X and X

Which of the following is an example of a sex-linked trait?

• Skin color

• Height

• Color blindness

• Coat color in rabbits

What is the inheritance pattern of a trait that is controlled by two or more genes?

• Complete dominance

• Polygenic inheritance

• Incomplete dominance

• Codominant alleles

What can influence how genes are expressed, apart from genetic factors?

• Nutrition, light, and chemicals

• All of the answers

• Bacteria, fungi, and parasites

• Infectious agents and viruses

Which of the following is an example of polygenic inheritance?

• Red snapdragons

• Height

• Black chicken

• Color blindness

What is the term for traits controlled by genes located on sex chromosomes?

• Codominant traits

• Polygenic traits

• Sex-linked traits

• Incomplete traits

What is the term for the inheritance pattern when both alleles show equally?

• Multiple alleles

• Codominant alleles

• Incomplete dominance

• Complete dominance