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प्रश्न
In a homozygous plant round seeds (R) are dominant over wrinkled seeds (r) : Draw a Punnett square to show the gametes and offspring when both the plants have heterozygous round seeds (Rr).
उत्तर
The cross is as follows :
Parents : Rr (Round) x Rr (Round)
Gametes : Rr
Punnett square :
Both plants are with heterozygous round seeds (Rr)
| Gametes | R | r |
| R |
RR (Homozygous round seeds) |
Rr (Heterozygous round seeds) |
| r |
Rr (Heterozygous round seeds) |
rr (Homozygous wrinkled seeds) |
Therefore the ratio will be 1 (homozygous round) : 2 (heterozygous round) : 1 (wrinkled)
APPEARS IN
संबंधित प्रश्न
Define the term heredity.
Predict the genotype and phenotype of the following cross in pea.
TtRr x TtRr
(Capital letters show dominance)
Give an account of incomplete dominance with a suitable example.
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 ______.
Which of the following characters was not chosen by Mendel?
New species may be formed if
- DNA undergoes significant changes in germ cells
- chromosome number changes in the gamete
- there is no change in the genetic material
- mating does not take place
Mendel selected pea as material for his experiments because:
Can a child have blood group O if his parents have blood group ‘A’ and ‘B’. Explain.
