Model Organisms For Functional Genetics And Genomics

Step 1: Understanding Hardy-Weinberg Principle
- The Hardy-Weinberg equilibrium describes allele frequencies in a non-evolving population.
- It assumes a large population size to minimize genetic drift.

Step 2: Why Large Population?
- Genetic drift affects small populations, disrupting equilibrium.
- Large populations maintain stable allele frequencies.

Step 3: Conclusion
The Hardy-Weinberg law applies to large populations, making Option (2) correct.

Step 1: Understanding Inbreeding Depression
- Inbreeding leads to reduced genetic diversity, increasing the likelihood of harmful recessive traits.
- This can lower fertility and productivity in offspring.

Step 2: Explanation of the Assertion
- Inbreeding depression is the main reason for reduced fertility and productivity.
- Both (A) and (R) are correct, and (R) correctly explains (A).

Step 3: Conclusion
Since inbreeding depression explains reduced fertility and productivity, Option (1) is correct.

Step 1: Understanding the Relationship Between Tissues and Cancer Types
Different types of cancers originate from different tissues. Understanding this helps in matching them correctly.

Step 2: Matching the Pairs
- Epithelial tissues are associated with Carcinoma (II), a cancer of epithelial cells.
- Connective tissues are associated with Sarcoma (IV), a cancer affecting bones, cartilage, and connective tissues.
- Bone marrow is linked to Leukemia (I), a blood cancer originating in bone marrow.
- Non-hereditary cancers refer to Sporadic cancer (III), which occurs due to environmental or lifestyle factors rather than genetic inheritance.

Step 3: Conclusion
Thus, the correct matching is:
- A → II
- B → IV
- C → I
- D → III