Biology
Grade-8
Easy
Question
How many offspring in the above cross are heterozygous?
- 1
- 2
- 3
- 4
Hint:
When both the alleles of a gene are different it is called as heterozygous.
The correct answer is: 2
- The green pod is considered as dominant with GG or Gg as genotype.
- The yellow pod is recessive with gg as its genotype.
- The F1 generation has genotype of Gg which is heterozygous.
- The F2 generation is produced by self cross of Gg, which is represented as follows:
-
Gametes
G
g
G
GG
Gg
g
Gg
gg
The heterozygous green pod is represented by Gg which is present in 2 offspring.
| Gametes | G | g |
| G | GG | Gg |
| g | Gg | gg |
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