Question

what is the likelihood of an offspring having a heterozygous genotype from a homozygous dominant and homozygous recessive parent? (complete a punnet square)

25%
50%
75%
100%

if a parent has a bb and bb genotype, what gametes will be produced?

1 bb cell, 1 bb cell, 1 bb cell, and 1 bb cell
4 bb cells
2 bb cells, and 2 bb cells
1 bc cell and 1 bc cell

Explanation:

Determine parental genotypes for Question 1

Using the Dominant and Recessive knowledge point

$$
LATEXBLOCK0
$$

Perform cross using Punnett square

Using the Punnett Square knowledge point

$$
LATEXBLOCK1
$$

$$ \text{All offspring genotypes: } 100\% \text{ } Aa \text{ (heterozygous)} $$

Analyze gamete production for Question 2

Using the Gamete Formation knowledge point

$$
LATEXBLOCK2
$$

Answer:

Question 1

• (A) 25%
• (B) 50%
• (C) 75%
• (D) 100% (Correct answer)

Question 2

• (A) 1 Bb cell, 1 BB cell, 1 bb cell, and 1 bB cell
• (B) 4 BB cells
• (C) 2 BB cells, and 2 Bb cells (Correct answer)
• (D) 1 BC cell and 1 bc cell