Biology, 09.12.2020 01:00, monkeys450

In pea plants Green is dominant to yellow. Two heterozygous green plants are crossed. What are the genotypes of the offspring?

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answered: smartbd

When two heterozygous (Gg) individuals mate, the expected genotypes in offspring are GG, Gg and gg in proportion 1:2:1.

Complete dominance refers to the genetic phenomenon in which the expression of the dominant allele masks the expression of the recessive allele in hetoroyigous individuals.In this case, both parents are heterozygous (genotype Gg) for the trait pea plant color.In consequence, both parents can produce two types of gametes: 'G' gametes (50%) and 'g' gametes (50%).

The Punnett square for this cross is:

G g

G 1/4 GG 1/4 Gg

g 1/4 Gg 1/4 gg

In conclusion, when two heterozygous (Gg) individuals mate, the expected genotypes in offspring are GG, Gg and gg in proportion 1:2:1.

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answered: alexandroperez13

Explanation:

With two hetero-zygous are crossed,

Phenotypes are generally 75% of the dominant (Green) and 25% of the recessive (Yellow).

Genotypes would be

25% homo-zygous dominant (Green)

50% hetero-zygous (Green)

25% homo-zygous (Yellow)

Note that the words homo-zygous and hetero-zygous do NOT spell with a hyphen. filter does not allow for the correct spelling.

answered: Guest

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar flies (drosophila). one sample revealed an anomaly: a white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs) produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.

answered: Guest

Compound light microscope

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In pea plants Green is dominant to yellow. Two heterozygous green plants are crossed. What are the...