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Lera25 [3.4K]
4 years ago
5

In sunflowers, tall stems (T) is a dominant trait while short stems (t) is a recessive trait. In a field of 1000 sunflowers, 820

are tall plants and 180 are short. Which statement BEST describes the genotype of the sunflowers in the field? A) About 50% are homozygous for tall stems. B) About 75% are homozygous for tall stems. C) About 50% are homozygous for short stems. D) About 50% are heterozygous for tall stems.
Biology
2 answers:
hram777 [196]4 years ago
8 0

The correct answer is D.)

mote1985 [20]4 years ago
4 0

Answer:

The most appropriate answer would be option D.

The ratio of plants with a tall stem to plants with a short stem in roughly equals to 3:1, that is, the phenotype ratio is roughly equal to 3:1.

Thus, by Mendelian genetics, the ratio of the genotypes should be roughly equal to 1 (TT): 2 (Tt): 1 (tt).

Hence, about 50 percent of the population should be heterozygous in nature.

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