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Punjab 12th Class Biology Inheritance Mcqs Test Online

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12th Biology Class Test
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1. If a man of M blood group marries a woman of N blood group all their children will have:

2. Albinsim is a recessive gene. A woman with albino father marries as albino man, the proportion of her progeny is:

3. All chromosomes other than sex-chromosomes are called:

4. A heterozygous red-eyed female Drosophila mated with a white-eyed male would produce:

5. All the offspring of a white hen and a black rooster are grey. The simplest explanation for this pattern of inheritance is:

6. Whether an allele is dominant or recessive depends on:

7. Blood group in human beings are controlled by:

8. A man who has types B blood and a woman who has type A blood could have children of which of the following phenotypes?

9. When mothers anti-RH negative antibodies seep through placenta into blood circulation of foetus they start ________ of RBC of the foetus.

10. Mendel’s law of independent assortment can be demonstrated by:

11. Genes located on same locus bit having different expressions are:

12. Investigators do a dihybrid cross between two heterozygous and get about a 3:1 ratio among the offspring. The reason must be due to:

13. Rh blood group system is encoded by three genes C, D and E which occupy ________ tightly linked loci:

14. Phenomena of an allele of one gene suppressing the activity of allele of another gene is called:

15. If red eyed (dominant) fly is mated with white eyed (ressessive) fly, the ratio of red to white eyed in F₂ generation would be:

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