Tomatoes have a round shape and red color of the fruit is dominant. Determine how many red round

Tomatoes have a round shape and red color of the fruit is dominant. Determine how many red round fruits from the total yield (48 tons) will be from crossing heterozygous plants with red round fruits.

Let’s designate the gene for the dominant round shape as S, and the gene for the recessive trait (obviously, the elongated shape of tomatoes) as s. Let’s designate the gene responsible for the development of red tomatoes as R, then the gene for the recessive trait will be r. Most likely, the yellow color of the tomato fruit is a recessive trait.
Heterozygous tomatoes will be recorded as SsRr. They will produce sr, SR, Sr, sR germ cells.
The offspring from crossing such tomatoes will be represented by the following options:
round red fruit tomatoes (SSRR, 2SsRR, 2SSRr, 4SsRr);
round yellow fruits (2Ssrr, SSrr);
oblong tomatoes with red fruits (ssRR, 2ssRr);
oblong yellow fruit tomatoes (ssrr).
Tomatoes with red round fruits will make up 9 of the 16 genotypes.
(9 * 48) / 16 = 27
Answer: 27 tons.