In tomato's, red fruit (R) is dominant over yellow fruit (r). What is the probability that an offspring of plants that are heter ozygous (Rr) produce plants with the homozygous recessive (rr) genotype?
1 answer:
Answer:
1 out of 4
or
25%
Explanation:
First we draw a Punnett Square for this:
R r
R RR Rr
r Rr rr
So here we have the following genotypes possible for this cross:
RR = homozygous dominant
Rr = heterozygous dominant
rr = homozygous recessive
As you can see out of the four (4) possible outcomes, one (1) of them is rr. So the probability is 1 out of 4 chances or 25%.
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