Variation and genetics – Online MCQs Test – Biology MCAT

1. In Erythroblastosis foctalis:

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

3. Variations provide raw materials for the process of:

4. Erythroblastosis fetalis is characterized by the symptom of:

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

6. The polygenic character is:

7. The phenotypic ratio of plants with dominant character to those with recessive character is always close to:

8. The cross in which two characters are followed at the same time is called:

9. ________ pairs of chromosomes found in Drosophila:

10. Which of the following crosses is a test cross?

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

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

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

14. Each human being possesses ________ pairs of chromosomcs.

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

16. Mendel’s law of segregation states that.

17. Sex determination in Drosophila was done by:

18. The result obtained from mono hybrid cross is spoken as

19. Law of segregation suggests that each gamete has

20. Diabetes Mellitus is caused by a deficiency of: