Zoology - Principles of Inheritance and Variation Question with Solution | TestHub

ZoologyPrinciples of Inheritance and VariationMonohybrid and Dihybrid CrossesEasy2 minPYQ_2020
ZoologyEasysingle choice

From a single ear of corn, a farmer planted 200 kernels which produced 146 tall and 44 short plants. The genotypes of these offsprings are most likely

Options:

Answer:
B
Solution:

Monohybrid cross is defined as "a genetic mix between two individuals who have homozygous genotypes, or genotypes that have completely dominant or completely recessive alleles, which result in opposite phenotypes for a certain genetic trait". The phenotypic ratio and genotypic ratio of the F2 generation for a monohybrid cross comes to3:1and1:2:1. In the given Q, out of 200, 146 are tall and 44 are short which is closely to the phenotypic ratio of3:1. We can say the genotypic ratio will follow1:2:1, thus, having three genotypes - TT, Tt, tt.

Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Monohybrid and Dihybrid Crosses
⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...