Question

If a heterozygous tall plant is cross with homozygous dwarf plant, the proportion of dwarf progeny will be

100

75

50

25​

Answer 1

Explanation:

Gametes from the homozygous dwarf plant all carry the x (recessive, dwarf) allele, while gametes from the homozygous tall plant all carry the X (dominant, tall allele). So if the heterozygous plant is crossed with a dwarf xx plant, half the progeny will be xx (dwarf) and half Xx (tall).

Answer 2

Answer:

Heterozygous tall plant - Tt

Homozygous dwarf plant - tt

Cross between them - Tt   x   tt

Offsprings : Tt, Tt, tt, tt

Out of the offspring produced, 50%  will be tall and 50% will be dwarf.

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