Question

type the correct answer in the box. a snapdragon with pink flowers with the genotype rr is mated with a snapdragon with red flowers with the genotype rr. what is the probability of obtaining a flower with a heterozygous genotype? the possibility of obtaining a heterozygous flower is %.

Explanation:

Step1: Determine Genotypes and Cross

The pink snapdragon has genotype \( Rr \), and the red snapdragon has genotype \( RR \). We perform a Punnett square cross: \( Rr \times RR \).
The possible gametes from \( Rr \) are \( R \) and \( r \), and from \( RR \) are \( R \) and \( R \).

Step2: Create Punnett Square

	\( R \)	\( R \)
\( r \)	\( Rr \)	\( Rr \)

From the Punnett square, the genotypes of the offspring are \( RR \) (2 times) and \( Rr \) (2 times). The total number of offspring genotypes is 4.

Step3: Calculate Probability of \( Rr \)

The number of \( Rr \) genotypes is 2. The probability is \( \frac{\text{Number of } Rr}{\text{Total Number of Genotypes}}=\frac{2}{4} = 0.5\). To convert to a percentage, we multiply by 100: \( 0.5\times100 = 50\% \).

Answer:

50