A cross between a plant with red flowers (R = dominant) and a plant with white flowers (r = recessive) yielded 47 plants with red flowers and 51
plants with white flowers. What are the genotypes of the parent plants? Explain
O A. The results are close to a 1:1 ratio of plants with red flowers to plants with white flowers. Therefore, the genotypes of the
Rr and ir
O
B.
The results should yield plants with red flowers and plants with white flowers in a 3:1 ratio due, so the geneotype of each parent is Rr.
The number of offspring was not large enough to produce the expected results
O
C. The results differ from the predicted values. Therefore, the genotypes of the parents cannot be determined.
O
D
. The results should show a ratio of 3 plants with white flowers to 1 plant with red flowers, so the genotypes of the parent plants are RR
and ir

Since the parents mated and yielded 47 plants and 51 plants, it reflects that one parent is red flower dominant while the other homozygous white recessive

priyankatutor priyankatutor · Answer 2 · 2022-01-22T11:51:32+01:00

The result is close to the 1:1 ratio of red to white flowering plants, so the genotype must be Rr and rr. Option A is correct.

Law of Dominance:

According to this law, the offspring of the first generation from pure breed parents will show only dominant traits.

When a Heterozygous dominant parent mates with a pure recessive parent the ratio of the dominant and recessive characters will be 1:1.

The cross:

r r

R Rr Rr

r rr rr

Therefore, the result is close to the ratio of red to white flowering plants, so the genotype must be Rr and rr.

Learn more about the law of dominance:

https://brainly.com/question/1602023