The following points highlight the three main laws of genetics proposed by Mendel. The laws are: 1. Law of Dominance and Recessive 2. Factors and their Segregation 3. Dihybrid Cross. Law # 1. Law of Dominance and Recessive: Mendel designated dominant, the character which appears in F1 masking the effect of the factor for the other character, the character which [...]
In this article we will discuss about:- 1. Meaning of Crossing Over 2. Double Cross-Over 3. Cytological Basis 4. Cytological Evidence 5. Somatic Crossover 6. Different Theories on the Mechanism 7. Theories that Explain the Happenings 8. Chiasma Formation—the Theories 9. No Cross-over in Drosophila Males 10. Experimental Conditions. Contents: Meaning of Crossing Over Double Cross-Over Cytological Basis of Crossing [...]
Here is a list of top fourteen problems on genetics along with its relevant solution. Problem 1: Albinism is recessive to normal body pigmentation in man. It is an autosomal trait. If a homozygous normal man marries an albino girl, what would be the phenotypic and genotypic ratios in F2 generation from this marriage? Solution: Since the two traits (albinism [...]