The following points highlight the eight important forms of gene expressions and interactions. The forms are: 1. Typical Di-Hybrid Ratio 2. Complementary 3. Supplementary 4. Polymerism 5. Epistatis 6. Inhibitory 7. Duplicate 8. Cumulative or Additive. Form # 1. Typical Di-Hybrid Ratio (9:3:3:1): This type of gene interaction produces the typical di-hybrid ratio of 9:3:3:1 […]
8 Important Forms of Gene Interactions
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Crossing-Over: Meaning, Mechanism and Significance
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In this article we will discuss about:- 1. Meaning of Crossing-Over 2. Example of Crossing Over in Drosophila 3. Theories 4. Mechanism 5. Kinds 6. Percentage 7. Cytological Evidence 8. Factors 9. Cytological Evidence 10. Significance 11. Interference and Coincidence. Meaning of Crossing-Over: The phenomenon of complete linkage occurs rarely since the linked genes tend […]
Top 26 Problems on Genetics
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List of twenty-six general problems on genetics. Q. 1. The round shape of pea seeds is dominant over the wrinkled shape of seeds. If two homozygous parents belonging to round and wrinkled character are crossed, then describe the F2 generation including test cross ratio. Ans. In the test cross, F1 hybrid (Ww) is back crossed […]
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