This practice test includes 25 multiple choice Questions from class 12th chapter – Principles of inheritance and variation.
Principles of Inheritance and Variations (Class 12th – Biology) Revision Test | MCQs For NEET
Score: 0 / 25
Questions
Q1. A recessive allele is expressed in
It is expressed in homozygous condition only.
Q2. The characters which appear in the first filial generation are called
These characters are called dominant characters
Q3. What will be the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus ?
Q4. In a monohybrid cross between two heterozygous individuals, percentage of pure homozygous individuals obtained in F1 generation will be
Q5. What is the probability of production of dwarf offsprings in a cross betweeen two heterozygous tall pea plants ?
The probability of production of dwarf offsprings in a cross betweeen two heterozygous tall pea plants is 25%
Q6. Which of the following crosses will give tall and dwarf pea plants in same proportions ?
Tt × tt will give tall and dwarf pea plants in same proportions
Q7. Which of the following is incorrect regarding ZW – ZZ type of sex determination ?
Females are homogametic and males are heterogametic is incorrect.
Q8. A couple has six daughters. What is the possibility of their having a girl next time ?
Probability is 50 %.
Q9. Number of autosomes present in liver cells of a human female is
autosomes present in liver cells of a human female is 22 pairs
Q10. Haplodiploidy is found in
Haplodiploidy is found in honeybees, ants and waspe.
Q11. Rate of mutation is affected by
all of these
Q12. Two or more independent genes present on different chromosomes which determine nearly same phenotype are called
It is known as duplicate genes
Q13. Select the incorrect statement regarding pedigree analysis
Solid symbols show affected individuals
Q14. To determine the genotype of a tall plant of F2 generation, Mendel crossed this plant with a dwarf plant. This cross represents a
This cross represents a test cross.
Q15. Mendal formulated the law of purity of gametes on the basis of
law of purity of gametes was based on monohybrid cross
Q16. The inheritance of flower colour in Antirrhinum (dog flower) is an example of
Flower colour in Antirrhinum (dog flower) is an example of incomplete dominance
Q17. Phenotypic and genotypic ratio is similar in case of
Q18. What can be the blood group of offspring when both parents have AB blood group ?
Q19. Inheritance of roan coat in cattle is an example of
Q20. How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci ?
It can produce 16 gametes.
Q21. Law of independent assortment can be explained with the help of
It can be explained by dihybrid cross
Q22. Which three scientists independently rediscovered Mendel’s work ?
Three scientists were de Vries, Correns and Tschemark.
Q23. Chromosomal theory of inheritance was given by
This theory was given by Sutton and Boveri.
Q24. Experimental verification of ‘chromosomal theory of inheritance’ was done by
Q25. Genes located very close to one another on same chromosome tend to be transmitted together and are called as
It is called as linked genes.
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