
Consider two unlinked genes P and Q. A plant with genotype PPQQ was crossed with another plant with genotype ppqq to obtain F1 progeny. If the F1 progeny to test-crossed, the percentage of resultant plants with the genotype ppqq will be:
Answer
507.9k+ views
Hint:When genes are found on different chromosomes or far apart on the same chromosome are said to be unlinked. The genes that are close together on the same chromosome, they are said to be linked.
The genotype is a complete set of heritable genes or the genes that can be passed down from parents to offspring.
Complete answer:
The cross between F1 progeny with homozygous recessive parents.
On test cross, the resultant genotypes are PpQq, Ppqq, ppQq, ppqq in the ratio .
Hence percentage of resultant plants with the genotype ppqq will be
Hence B is the correct option.
Note: Phenotypic ratio pertains to the relative number of offspring manifesting a particular trait or combination of traits. The genotypic ratios produce characteristic phenotypic ratios, according to the dominance relationships of the alleles involved.
The genotype is a complete set of heritable genes or the genes that can be passed down from parents to offspring.
Complete answer:
The cross between F1 progeny with homozygous recessive parents.
On test cross, the resultant genotypes are PpQq, Ppqq, ppQq, ppqq in the ratio
Hence percentage of resultant plants with the genotype ppqq will be

Hence B
Note: Phenotypic ratio pertains to the relative number of offspring manifesting a particular trait or combination of traits. The genotypic ratios produce characteristic phenotypic ratios, according to the dominance relationships of the alleles involved.
Recently Updated Pages
Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Master Class 12 Social Science: Engaging Questions & Answers for Success

Master Class 12 Chemistry: Engaging Questions & Answers for Success

Class 12 Question and Answer - Your Ultimate Solutions Guide

Master Class 11 Business Studies: Engaging Questions & Answers for Success

Trending doubts
Draw a labelled sketch of the human eye class 12 physics CBSE

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Which one of the following is a true fish A Jellyfish class 12 biology CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Write the difference between solid liquid and gas class 12 chemistry CBSE
