Tag: CSIR NET Life Science Previous Year Questions and Solution Genetics

12. The Mendelian law of Independent assortment is due to arrangement of chromosome during (1) Metaphase-I        (2) Anaphase-I (3) Metaphase-II       (4) Anaphase-II Explanation: Mendel’s law of independent assortment states that […]

11. Possible types of gametes formation from genotype AABBCcDdEe would be- (1) 16           (2) 64 (3) 8             (4) 128 Step-by-step reasoning Genotype given: AABBCcDdEe A: AA → homozygous (only A […]

10. Possible combination of gametes which can be formed by genotype AaBbCcDdEeFfGg are? (1) 16              (2) 32 (3) 64              (4) 128 Step-by-step reasoning Genotype: AaBbCcDdEeFfGg Each gene is heterozygous (A/a, […]

9. In test cross, F1 progeny is crossed with (1) Either of the parent (2) Recessive parent (3) Dominant parent (4) Heterozygous parent Concept of a test cross A test cross is […]

8. All of the mendelian alleles for different trait showed (1) Epitasis (2) Co-dominance (3) Incomplete dominance (4) Dominance and recessiveness Explanation: In Mendel’s classic pea plant experiments (seed shape, […]

7. Typical mendelian dihybrid ratio for F2 generation is- (1) 9:3:3:1            (2) 9:7 (3) 1:2:1               (4) 9:7 Dihybrid Cross: 9:3:3:1 Ratio Genes and Alleles A dihybrid cross tracks two genes, […]

6. Mendel’s laws of inheritance is applicable to- (1) Nuclear genes                 (2) Plasmid genes (3) Mitochondrial genes     (4) Plastid genes Why nuclear genes […]

5. A Rh + ve male marries a Rh-ve female, their progenies will be- (1) Rh +ve only (2) Rh -ve only (3) Can be Rh +ve or –ve (4) […]

4. When dominant purple color flower (PP) are crossed with recessive white (pp), then the progenies will have the ratio of Purple: White is (1) 1:2:1          […]

3. If P is for purple (dominant) and p for red (recessive) and L for wide leaf (dominant) and l for narrow leaf (recessive). When a cross is made between […]