What would be the genotype of a tall and dwarf plant?

The plants of genotype Tt are self-pollinated. (both tall (T) but with dwarf (t) alleles). The letters T and t are used to represent the alleles of the gene that determine plant height by conventions.

What are the genotypes of the parent plants in this cross?

No recessive phenotype appears in the F1 generation. This means that both parents cannot have the recessive allele for each trait. Therefore the parental genotypes must be WWdd x wwDD. As a check, this cross produces all individuals with a genotype of WwDd.

What would be the genotype of the parents if the offspring have the phenotypes in 1 1 proportion?

If the offspring have the phenotypes in 1:1 proportion then genotype of the parents will be Aa x aa.

What are the parents genotype if the F1 ratio is 1 1?

This is a 1:1 ratio, which is what we would expect from a monohybrid testcross. However, we do not know which is dominant, red eyes or brown eyes. Thus one parent is heterozygous (Rr) and the other parent is homozygous recessive (rr) at the eye color locus.

Which of the following crosses will give tall and dwarf pea plants in same proportion *?

This is an example of a test cross in which a cross is made between heterozygous tall and homozygous dwarf individuals, tall and dwarf plants are obtained in same proportions.

What is the genotypic ratio of dihybrid cross?

1 : 2 : 1.

What is the genotype for the tall plant?

Genotypes for plant height are TT, Tt, tt. Phenotypes for plant height are tall or short. TT and Tt genotypes both expressed the tall phenotype because the T is dominant to t. Only the tt genotype expressed the short phenotype.

How do you find the genotype of a parent?

To construct a Punnett square, the genotypes of both parents must be known. One parent’s alleles are listed across the top of the table, and the other parent’s alleles are listed down the left hand side. The resulting offspring genotypes are produced at the intersection of the parent’s alleles.

When an F1 is crossed with the recessive homozygous parent the cross is known as?

testcross
When a progeny of F1, is crossed with the homozygous recessive parent, it is called testcross.

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