Genotype of a Hybrid

To determine the genotype of a hybrid, various methods can be employed. One common test is crossing the hybrid with the parent plants and analyzing the resulting progeny. In this case, the correct answer is option 'C' - crossing one F1 progeny with the male parent.

Crossing of one F1 progeny with male parent

When a hybrid is produced by crossing two different parental plants, it is called an F1 progeny. The F1 progeny is heterozygous, meaning it carries two different alleles for a specific gene. To determine the genotype of the hybrid, one can perform a test cross by crossing the F1 progeny with one of the parental plants.

Explanation

The reason why crossing the F1 progeny with the male parent is preferred is because the male parent will only contribute one set of alleles to the offspring. By crossing the F1 progeny with the male parent, the genotype of the hybrid can be determined based on the phenotypes of the progeny.

If the F1 progeny is crossed with the male parent, the possible outcomes are as follows:

- If the F1 progeny is homozygous dominant (AA), all the offspring will display the dominant phenotype. This indicates that the hybrid is homozygous dominant.
- If the F1 progeny is heterozygous (Aa), half of the offspring will display the dominant phenotype and half will display the recessive phenotype. This indicates that the hybrid is heterozygous.
- If the F1 progeny is homozygous recessive (aa), all the offspring will display the recessive phenotype. This indicates that the hybrid is homozygous recessive.

By observing the phenotypes of the offspring resulting from the test cross, the genotype of the hybrid can be determined. Therefore, crossing one F1 progeny with the male parent is a common test to find the genotype of a hybrid.

In conclusion, option 'C' - crossing one F1 progeny with the male parent - is the correct answer to determine the genotype of a hybrid. This test provides valuable information about the allelic composition of the hybrid and helps in understanding the inheritance patterns of specific traits.