Practice question
Question
Which of the following correctly describes a test cross?
Explanation
A test cross helps determine an organism’s genotype by crossing it with a homozygous recessive individual.
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AIM To study the meiosis in onion bud or grasshopper testis using permanent slides. PRINCIPLE Meiosis is reduction division that reduces chromosome number by half and produces four haploid gametes from a diploid parent cell. It consists of two successive divisions, Meiosis-I and...
AIM To identify the stages of gamete development, i.e. T.S. of testis and T.S. of ovary through permanent slides. PRINCIPLE Gametogenesis is the process of formation of haploid gametes from diploid germ cells. In males it is called spermatogenesis in testis and in females oogenes...
Understand genotypic ratios, how to calculate them for monohybrid, dihybrid and trihybrid crosses, and why they matter in Mendelian genetics.
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