Variation and genetics – Online MCQs Test – Biology MCAT

1. Acquiring of information about the phenotypes of family members to infer the genetic nature of a trait from the pattern of its inheritance is:

2. The genotype of a dog can be best determined by:

3. Law of independent assortment can be proved by a cross

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

5. Erythroblastosis fetal is can occur if marriage occurs between

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

7. If a homozygous red-flowered Mirabilis jalapa plant is crossed with a homozygous white-flowered plant, the first that generation would yield:

8. Both alleles of a contrasting character are dominant and express themselves in heterozygous individual neither masking the effect of one another, this is:

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

10. X and Y-chromosomes are called:

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

12. How many genotypes can be produced by two alleles A and a?

13. A normal woman, whose father was colour blind, marries a colour blinded man. The ratio of their children for colour blindness can be:

14. Cross appearance of intermediate character is known as:

15. None of the two genes is dominant over the other, this phenomenon is:

16. Rh stands for:

17. Blood group A can be donated to:

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

19. Genes that occupies a specific position called:

20. Mendel’s hereditary factor “genes” are located on: