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A tall pea plant with red flowers has the genotype TtRr. This plant is crossed with another tall pea plant with white flowers, having the genotype Ttrr. What is the probability of getting dwarf plants with red flowers in the F1 progeny

Sagot :

samueladesida43

Answer:

1/8 or 12.5%

Explanation:

This question involves two genes coding for height and flower color in pea plant. The alleles for tallness (T) and red flowers (R) are dominant over the alleles of short (t) and white flowers (r).

According to this question, a tall pea plant with red flowers (TtRr) is crossed with another tall pea plant with white flowers (Ttrr). The following gametes is produced by each parent:

TtRr - TR, Tr, tR and tr

Ttrr - Tr, Tr, tr and TR

Using these gametes in a punnet square (see attached image), the following proportion of F1 offsprings will be produced as follows:

Tall, Red (T_R_) = 6

Tall, white (T_rr) = 6

Dwarf, red (ttR_) = 2

Dwarf, white (ttrr) = 2

The probability of getting dwarf plants with red flowers in the F1 progeny is 1/8 or 12.5%.

View image samueladesida43

Answer:

12.5

Explanation:

got it correct on test

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