Zoology - Principles of Inheritance and Variation Question with Solution | TestHub

A. Two or more alternative forms of gene are called alleles. B. Cross of ${\mathrm{F}}_1$ progeny with homozygous recessive parent is a test cross. C. Cross of ${\mathrm{F}}_1$ progeny with any of the parents is a back cross. D. Number of chromosome sets in plant is called ploidy.