(A) Let the red flower allele be $R$ and the white flower allele be $r$. The hybrid between red $(RR)$ and white $(rr)$ strains is $Rr$ (red-flowered)

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(A) Let the red flower allele be $R$ and the white flower allele be $r$. The hybrid between red $(RR)$ and white $(rr)$ strains is $Rr$ (red-flowered).When this hybrid $(Rr)$ is crossed back with the pure red-flowered strain $(RR)$:$Rr \times RR \rightarrow RR, RR, Rr, Rr$.All offspring possess at least one dominant $R$ allele,resulting in $100\%$ red-flowered progeny.Therefore,the correct option is $A$.

Class 12 Biology Principles of Inheritance and Variation Inheritance of one gene

Medium

In pea plants,hybrids between red-flowered and white-flowered strains were crossed back to a pure red-flowered strain. The progeny of this cross will have:

A
Red flowers only
B
White flowers only
C
Equal number of red and white flowers
D
Mostly red flowers

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Biology Questions

Chapter

Principles of Inheritance and Variation

Subtopic

Inheritance of one gene

If a dwarf plant is treated with gibberellin,it becomes tall. If this plant is now crossed with a pure tall plant,what will be the progeny of the $F_1$ generation?

Medium

View Solution

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.

Difficult

View Solution

In hybridization,$Tt \times tt$ gives rise to progeny in the ratio of:

MediumAIPMT 1999

View Solution

$A$ heterozygous tobacco plant for albinism is self-pollinated,and $1200$ seeds are subsequently germinated. How many of the offspring will have the parental genotype?

Difficult

View Solution

When an individual has both alleles of a contrasting character,it is said to be:

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

In pea plants,hybrids between red-flowered and white-flowered strains were crossed back to a pure red-flowered strain. The progeny of this cross will have:

Similar Questions

If a dwarf plant is treated with gibberellin,it becomes tall. If this plant is now crossed with a pure tall plant,what will be the progeny of the $F_1$ generation?

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.

In hybridization,$Tt \times tt$ gives rise to progeny in the ratio of:

$A$ heterozygous tobacco plant for albinism is self-pollinated,and $1200$ seeds are subsequently germinated. How many of the offspring will have the parental genotype?

When an individual has both alleles of a contrasting character,it is said to be:

Vedclass Test Series

Exam Paper Generator

Online Exam Module