Advertisements
Advertisements
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
A pea plant pure for yellow seed colour is crossed with a pea plant pure for green seed colour. In the F1 generation all pea plants were with yellow seeds. Which law of Mendel is applicable?
Using a Punnett square, work out 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.
Explain Monohybrid cross
Differentiate between Mendel’s monohybrid cross and dihybrid cross.
State Mendel's law of dominance.
Why law of segregation is also called the law of purity of gametes?
First geneticist/father of genetics was ______.
Which is the one characteristic of the parents that can be inherited by their children?
Give the pair of contrasting traits of the following characters in the pea plant and mention which is dominant and recessive
- yellow seed
- round seed
The maternal grandfather of a boy is colorblind, but his maternal grandmother is normal. The father of the boy is also normal. What is the probability of this boy being colorblind?
