Question

What is the ratio of a progeny of cross between F1 heterozygous and recessive?
A. 3:1
B. 1:2:1
C. 2:1
D. 1:1

Answer 1

The posterity, or F1 age, delivered from the hereditary cross of such people are generally heterozygous for the particular characteristics being contemplated. This implies the entirety of the F1 people have a crossover genotype.

Complete step by step answer:
Heterozygous function: Heterozygous is a condition of having acquired various types of a specific quality from every single one of your natural guardians. Presently, by various structures we by and large imply that there are various parts of the quality where the succession is unique. They might be irrelevant bits of the quality, or they may in reality be entirely significant parts of the quality. That doesn't generally make a difference for our conversation today. "Heterozygous" basically implies that your organic mother and your natural dad, when they contributed their duplicates of a specific quality to you, they did as such as it were so the DNA grouping is somewhat extraordinary. It may very well be distinctive at one point in the quality, or it tends to be diverse at handfuls and many various focuses in the quality.

Heterozygous cross: that a creature has two distinct alleles of a quality. For instance, pea plants can have red blossoms and either be homozygous prevailing (red-red), or heterozygous (red-white). In the event that they have white blossoms, at that point they are homozygous passive (white-white).

Heterozygous genetics: alludes to having acquired various types of a specific quality from each parent. A heterozygous genotype remains as opposed to a homozygous genotype, where an individual acquires indistinguishable types of a specific quality from each parent.

Solve solution:
Genotypes for producing F1​generation:
Genotype: TT x tt
Gametes: Tt
F1: Tt
Crossing of f1 with recessive genotype Genotypes: TT x tt Gametes: Tt F1: Tt Crossing of F1​with recessive genotype:
Tt x tt
Gametes: T, t
Tt x tt Gametes: T, t
F2: Tt and tt

Thus, the option (D) is correct.

Note:
Test crosses are utilized to test a person's genotype by intersection it with a person of a known genotype. People that show the passive phenotype are known to have a homozygous passive genotype The purpose of a test cross is to determine if this individual is homozygous dominant or heterozygous.