29, First child of parents shows developmental defects want to take help from genetic counselor for their second child. The genetic counselor must know to predict the fate of second […]
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CSIR NET Life Science Previous Year Questions and Solution on EXTENSION OF MENDELIAN PRINCIPLES (62)
CSIR NET Life Science Previous Year Questions and Solution on Genetics
What Is an Isochromosome?
28. If both arms of one chromosome have same genotype and structure, such chromosome is referred as (1) Isochromosome (2) Allochromosome (3) Duplicate chromosome (4) Homologous Chromosome The chromosome in […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Calculating Risk of Autosomal Recessive Trait in III‑1
27. In the following pedigree, individual with shaded circle or shaded square show presence of a recessive autosomal trait. The calculated risk of occurrence of this trait for iii-1 is […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Probability That Individual 6 Is a Heterozygote in an Autosomal Recessive Trait
26. The pedigree below represents the inheritance of an autosomal recessive trait. What is the probability that individual ‘6’ is a heterozygote? (1) 1/4 (2) 1/2 (3) 2/3 (4) 1/3 […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Pedigree Analysis of a Rare Recessive Disorder
25. The following pedigree shows the inheritance pattern of a rare recessive disorder with complete penetrance. A child from marriage between individual II-2 & II-3 will show the disorder only […]
![24. The inheritance pattern of a common trait which shows complete penetrance is shown below: Based on the above pedigree, fill in the blanks from the options given below: ‘’The trait is__[A] __, The probability that a child from the marriage of individual III-1 and III-2 will show the trait is __[B]__ considering that the individual III-1 is a carrier of the trait.” A B (1) Y-linked 0 (2) Y-linked 1/2 (3) Autosomal 1/8 (4) Autosomal 1/6](https://www.letstalkacademy.com/wp-content/uploads/2025/12/24-4.png)
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Pedigree Analysis of a Common Autosomal Trait with Complete Penetrance
24. The inheritance pattern of a common trait which shows complete penetrance is shown below: Based on the above pedigree, fill in the blanks from the options given below: ‘’The […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Autosomal Recessive Carrier Frequency and Affected Child Risk
23. The following pedigree shows the inheritance of a common phenotype controlled by an autosomal recessive allele. The probability of carriers in the population is 1/3 What is the probability […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Autosomal Recessive Inheritance and Probability for Affected Daughter
22. The following pedigree shows the inheritance pattern of a trait. From the following select the possible mode of inheritance and the probability that the daughter in generation III will […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Autosomal Recessive Albinism Pedigree
21. Affected individuals from the pedigree given below are suffering from albinism, an autosomal recessive disease. Identify the confirmed carrier individuals in this pedigree assuming that the members coming from […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Identifying Autosomal Dominant Inheritance (B, D, E)
20. The given pedigree shows the inheritance of a trait The following derivations are made from the pedigree chart: A. The trait can be Y-linked because I-parent produced II-4 child […]
