Genetics: Punnett Squares and Likelihood

Front

Genotype for a yellow plant (G = green, g = yellow)

Back

gg

Front

Brown eyes (B) tend to be dominant whereas blue eyes (b) tend to be recessive. Parents with heterozygous genes want to know: what is the likelihood of them having a child with blue eyes?

Back

25%

Front

Two heterozygous (Tt) tall pea plants are crossed. Tall (T) is dominant. Short (t) is recessive. What is the likelihood of each phenotype?

Back

75% tall and 25% short

Front

Which of the following would complete this Punnett Square?

aa

,

AA

,

Aa

Back

aa

Front

Brown eyes are dominant (B) to blue (b). If Parent A (bb) and Parent B (Bb) have a child, what is the likelihood that the child will have brown eyes?

Back

50%

Front

Which of the following must be the father's genotype?

RR

,

Rr

,

rr

Back

Rr

Front

If the father is homozygous recessive for dimples, what must the mother be for this Punnett Square? Options: Dd (Heterozygous), DD (Homozygous Dominant), dd (Homozygous Recessive)

Back

Dd (Heterozygous)