Variation and genetics – Online MCQs Test – Biology MCAT

1. A plant heterozygous for tallness produces both tall and dwarf plants on self-pollination. This proves the

2. It is the chance of an event to occur

3. In Erythroblastosis foctalis:

4. During meiosis, the homologous chromosomes come together and form pairs, a process called:

5. If an individual has a recessive phenotype for a given trait the genotype must he:

6. Basic units of inheritance are:

7. Sex limited trait is:

8. Any genetic trait which is transmitted through sex chromosomes is called:

9. The tendency of genes in a chromosome to remain together is called:

10. Variations are produced due to:

11. Number of Autosomes present in humans:

12. Which phenomenon reduces the chances of genetic recombination and variations among offspring?

13. ________ pairs of chromosomes found in Drosophila:

14. The sex-linked genes are present In a significant way on:

15. A cross between red flowered and white flowered plants results in pink flowered plants in F1 when the F1 hybrids were self-fertilized, the resulting F2 generation revealed I red, 2 pink, I white progeny. The type of inheritance is the result of:

16. Genes that occupies a specific position called:

17. II an organism has TtRr genotype, then which of the following gametes does not follow law of independent assortment?

18. In test cross if the parent whose genotypes is to be determined is heterozygous then it gives:

19. Suppressive influence of any genetic factor on another that is not its allele is:

20. The multiple effects of a single gene or allele are termed: