Biology
Grade-8
Easy

Question

What is the probability of getting a heterozygous genotypic ratio in a monohybrid cross?

  1. 25%
  2. 50%
  3. 75%
  4. 100%

hintHint:

When the two alleles of a gene are different, it is called heterozygous.

The correct answer is: 50%


    • In a monohybrid cross, the parents have homozygous alleles. 
    • One parent will be dominant and the other will be recessive.
    • The F1 generation will be heterozygous
    • Self cross of F1 will produce 4 offspring among which one homozygous dominant, one homozygous recessive ad two heterozygous dominant are present.
    • Therefore, the probability of heterozygous genotype will be 50%.

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