Genetics

What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?

• Ry

• RRyy

• RrYy

• Rryy

The genotypic percentage resulting from this this cross would be _____________________.

• 25% blue eye 75 % brown eye 
• BB = 25% Bb = 50% bb = 25%
• BB= 50 % bb = 50%
• All brown eye

Two heterozygous parents produce offspring. What is the probability of the HOMOZYGOUS DOMINANT GENOTYPE appearing in the offspring generation?

• 75%
• 25%
• 50%
• 100%

A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?

• 0%

• 25%

• 50%

• 75%

What would be the gametes for the YyRr plant?

• YR, YR, yR, yR

• YR, Yr, yR, yr

• Yy, Rr, YY, RR

• yy, rr, yy, rr

• YR, Yr, yR, yr, Rr, Yy

What is the genotype of the mother?

• BB
• bb
• Bb
• BB or Bb

An offspring will receive how many alleles from each parent to determine a specific trait?

• one
• two
• three
• five

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Which of the following genotypes is a purebred?

• Bb
• Gg
• bb
• Dd

What would the ratio for genotypes be for this Punnett Square?

• 2Bb:2bb
• 2BB:2Bb
• 1BB:2Bb:1bb
• 4Bb