Question

The genotype of a Dominant parent is determined by crossing it with a recessive parent. This cross is called as:
A. Back Cross
B. Test cross
C. Monohybrid cross
D. None of the above

Answer 1

Hint: A genotype is a creature's finished arrangement of heritable qualities, or qualities that can be passed down from guardians to posterity. These qualities help encode the attributes that are truly communicated in a creature, for example, hair shading, tallness, and so on.

Step by step answer:A testcross can be utilized to decide the living being's genotype. In a testcross, the person with the obscure genotype is crossed with a homozygous recessive trait or a person. So, option B is correct.
In backcross, the F1 half and half is crossed back with any of the parents, either predominant or latent. So, option A is incorrect.
A monohybrid cross is a hereditary blend between two people who have homozygous genotypes, or genotypes. So, option C is incorrect.
Hence, option B is correct.
Additional information
 Example: In the example shown here, a testcross is done to determine the genotype of a parental Agouti rat. Agouti (A) refers to a pattern of pigmentation in which individual hairs have several bands of light and dark pigment with black tips, and is the common color of the Norway rat, Rattus norvegicus. Agouti is the dominant phenotype, and in this example, has the genotypes AA or Aa. White fur color is the recessive phenotype, with a genotype.

Gametes	a	a
A	Aa(Agouti)	Aa(Agouti)
a	aa(white fur)	aa (white fur)

Note: A test cross is an approach to investigate the genotype of a creature. Early utilization of the test cross was a trial mating test used to figure out what alleles are available in the genotype. A creature's hereditary cosmetic is called its genotype, and it mirrors the entirety of the alleles, or types of the quality, that is conveyed by the living being. Therefore, a test cross can help decide if a predominant phenotype is homozygous or heterozygous for a particular allele.