Variation and genetics – Online MCQs Test – Biology MCAT

1. Mendel found that the F1 always resembled either one of the parents and that the trait of the other parent was not seen in them. This is due to

2. One of the x chromosomes of a woman bears two linked genes for haemophillic and colour blindness. She marries a normal man. How will the progeny be?

3. The human female possesses a genotype of:

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

5. A gene or locus which suppresses or masks the actual affect o; gene at another locus: the phenomenon called:

6. Number of Autosomes present in humans:

7. When a colour blind male marries a normal female:

8. Blood group 0 can receive:

9. Diabetes Mellitus is caused by a deficiency of:

10. In pleiotropy:

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

12. Which of the followings is not continuously varying trait?

13. Number of chromosomes present in Male Grasshopper:

14. Traits that are controlled by two or more than two separate pairs of genes, which manifest themselves in an additive fashion to yield continuously varying traits, this is:

15. Which of the following condition represents a case of co-dominant genes?

16. Erythroblastosis fetal is can occur if marriage occurs between

17. Persons suffering from colour blindness hae difficulty in distinguishing:

18. Blood group also known as “Universal Recipient” is:

19. 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:

20. Sex determination in Drosophila was done by: