Global MCQ Practice

🌐 Total MCQ
🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books

Class 12 Biology Chapter 5 Principles Of Inheritance And Variation Quiz 9 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Haplodiploidy technique of sex determination facilitates
2. The non-disjunction of 21st pair of autosomal chromosome leads to
3. Who is recognized as the Father and Founder of genetics?
4. Heterozygous tall and violet flowered plant (Tt Ww) was selfed, and a total of 1000 seeds were collected. The number of seeds with Ttww genotype will be
5. If 75% of the offspring show dominant character, then the parents are
6. A man whose father was color blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?
7. The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. Character studied in the pedigree analysis is equivalent to
8. A colourblind man (X$^{c}$Y) marries a woman who is carrier for haemophilia (XX$^{h}$). Which of the following is true for their progenies?
9. The allele which is unable to express its effect in the presence of another is called
10. A tall red-flowered pea plant after crossing with a dwarf white-flowered plant yields only tall red-flowered plants. A test cross shall give a ratio of
11. When dominant and recessive alleles express itself together it is called
12. Which of the following is not a hereditary disease?
13. Alleles are
14. Mendelian disorders are mainly determined by
15. Suppose that in sheep, a dominant allele B produces black hair and a recessive allele b produces white hair. If you saw a black sheep, you'll be able to identify
16. Which one is not Non-Mendelian inheritance-
17. IN Mirabilis jalapa WHEN THE PLANT WITH RED FLOWER CROSSED WITH THAT OF WHITE FLOWER F1 HYBRIDS SHOW FLOWERS WITH PINK COLOUR, THIS IS DUE TO
18. In sickle cell anaemia, glutamic acid is replaced by valine. Which one of the following triplets codes for valine
19. Which of the following is suitable for experiments on linkage?
20. In a cross between negro and albino skin colour of humans showing polygenic inheritance, the phenotypic ratio in F$_{2}$ generation will be
21. Chromosome theory of inheritance is proposed on the basis that
22. What is the genotype of an individual?
23. A gamete carries only one factor of a character. Above statement justifies
24. Male XX and female XY sometime occur due to
25. Mendel took the pollen from one pea plant and placed it onto the pistil of a second pea plants. This is .....
🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books