Variation and genetics – Online MCQs Test – Biology MCAT

1. Test cross is a cross between

2. Each gamete contains only one allele of a particular character and is said to be pure, this

3. Regarding colour blindness, “when a normal male marries carrier female”, which is the correct statement?

4. The breakdown product of RBC is:

5. The phenomenon in which genes are present on the same chromosomes is

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

7. Genes A and B are necessary for normal hearing. A deaf man marries a deaf woman and all their children have normal hearing. The genotypes of the parents are:

8. Phenotype is:

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

10. X and Y-chromosomes are called:

11. Which one of the following crosses shows 3: 1 ratio?

12. The-part of DNA which controls a specific character is

13. Separation of genes is called.

14. The total aggregate of genes in a population at any one time is called the populations

15. Erythroblastosis fetal is can occur if marriage occurs between

16. Locus is a:

17. The human female possesses a genotype of:

18. The allele that masks the effects of the other and the masked allele are known as:

19. Mendel’s law of segregation states that.

20. Which of the following is an example of a dihybrid cross?