Botany · Principles of Inheritance and Variation

NEET (UG) 2025 — Question 143

With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in $F_3$ generation.

Option A:
$1/4$
Option B:
$1/2$
Correct
Option C:
$1/8$
Option D:
Zero

Answer: B

Step-by-step solution

The pedigree shows a recessive genetic disorder inheritance pattern. Based on the carrier parents' genotypes, the

probability of an affected child is 1/4.

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Exam: NEET (UG) 2025
Paper: 2025 paper
Subject: Botany
Chapter: Principles of Inheritance and Variation
Topic: Genetic Disorders

What is the pattern of inheritance for polygenic trait?
Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the…

Answer: B

Step-by-step solution

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