Question

very short answer type questions plants with how many genotypes will be available in the F1 generation when cross is made between two hybrid tall (Tt) Plants?​

Answer 1

Answer:

If the pattern of inheritance (dominant and recessive) is known, the phenotypic ratios can be inferred as well. For a monohybrid cross of two true-breeding parents, each parent contributes one type of allele. In this case, only one genotype is possible in the F1 offspring.

Answer 2

Plants with three genotypes will be available in the F1 generation when cross is made between two hybrid tall (Tt) Plants.

• When we cross a heterozygous plant (Tt) when T is the trait for tall plants and t is the trait for drawf plants we get tall and drawf plants.
• we genotypically get Tall(TT) heterozygous tall(Tt) and drawf (tt)
• It segregates in a ratio of 1:2:1 (genotypically)
• Where as phenotypically we get a ratio of 3:1 where in 3 plants are tall and 1 is drawf
• The above quetion can be solved using punnet square.

Tt × Tt

/ \ / \

T t T t

now making all the possible combination we get,

TT (tall ) Tt (heterozygous tall) tt (drawf)