Question

What is the nature of the offspring of a test cross?

Answer 1

Test cross:

1. A test cross is used to determine the genetic composition of an individual.
2. During a test cross, an individual is crossed with another individual that is homozygous for the recessive trait.
3. The genotype of the parent is then determined by the offspring.

Nature of offspring in test cross:

1. The dominant phenotype whose genotype is to be determined is test crossed with the recessive phenotype.
2. The ratio of offspring phenotypes aids in determining the genotype of the dominant parent plant.
3. The genotype of the individual is simple to determine since a homozygous recessive allele individual can only pass on recessive alleles to their offspring.
4. If any of the progeny exhibits the recessive characteristic, the person is said to be heterozygous for the dominant allele.
5. The person is considered to be homozygous for the dominant allele if all of the progeny express solely the dominant characteristic.