Genetics Test Review

Why do scientist use Punnett Squares?

• A tool scientist use to to see alleles

• A tool scientist use to see which alleles are dominant

• A tool scientist use to determine possible genotypes for offspring

Which of the following is a Homozygous Dominant Genotype?

• Yy

• XX

• zz

Which of the following is a homozygous recessive genotype?

• HH

• dd

• Aa

Which of the following is a heterozygous genotype?

• Gg

• UU

• pp

What is the mother's genotype?

• DD

• Dd

• dd

A calico cat shows both the traits for orange fur and black fur. What kind of inheritance pattern is this?

• Incomplete Dominance

• Co Dominance

• Sex-Linked

• Polygenic

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?

• 0%

• 25%

• 50%

• 100%

This type of inheritance pattern is a Blend of both traits.

• incomplete dominance

• co-dominance

• complete dominance

• recessive pattern

This type of inheritance pattern shows BOTH traits in possible offspring

• complete dominance
• incomplete dominance
• co-dominance
• dominant pattern

How many PAIRS of chromosomes do humans have?

• 23
• 46
• 1
• 2