6. Which one of the following statements is INCORRECT? (1) Quantitative inheritance results in a range of measurable phenotypes for a polygenic trait. (2) Polygenic traits often demonstrate continuous variation. […]
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CSIR NET Life Science Previous Year Questions and Solution on Genetics
Understanding Quantitative Inheritance
5. Quantitative inheritance are due to (1) Variation in phenotype (2) Variation in genotype (3) Variation in environment (4) Variation in both genotype and environment Quantitative inheritance is due to […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
How to Identify Polygenic Traits in Crops Using QTL Mapping
4.Polygenic traits in crops can be identified by (1) QTL mapping (2) Cluster analysis (3) Tandem array analysis (4) Gene mapping Polygenic traits in crops are best identified by QTL […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Understanding Mendelian Inheritance and Its Applicability to Different Genetic Traits
3. Mendelian inheritance is obeyed by (1) Quantitative traits (2) Transposons (3) Organelle inheritance (4) Sex linked trait Mendelian inheritance is obeyed by sex-linked traits (4), but not by quantitative […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Understanding Heterosis
1. The phenomenon that progeny of diverse varieties of a species or crosses between species exhibit greater biomass. speed of development, and fertility than both parents is termed as (1) […]
CSIR NET Life Science Previous Year Questions and Solution on EXTRA CHROMOSOMAL INHERITANCE
Inheritance of Cytoplasmic Male Sterility in Pea Plants
Cytoplasmic male sterility (CMS) in plants is caused by mutation in the mitochondrial genome. CMS can be restored by a nuclear gene, restorer of fertility (Rf), which is a dominant […]
CSIR NET Life Science Previous Year Questions and Solution on EXTRA CHROMOSOMAL INHERITANCE
Yeast Petite and Grande Crosses
15. Two petite yeasts, Mat-a and Mat-α are crossed. The diploid is grande. After a few mitotic divisions, the grande diploid is sporulated. The analysis of a large number of […]
CSIR NET Life Science Previous Year Questions and Solution on EXTRA CHROMOSOMAL INHERITANCE
Chlamydomonas tetrad analysis – kanamycin resistance, PPT resistance and nuclear vs cytoplasmic inheritance
A mutant mating type mt strain of Chlamydomonas that was resistant to the antibiotic kanamycin (kanr) and herbicide PPT (pptr) was crossed to a wild type mating mt+ kams ppts […]
CSIR NET Life Science Previous Year Questions and Solution on EXTRA CHROMOSOMAL INHERITANCE
Maternal Effect Gene
During development, many gene products are provided by the females to the eggs which are needed for normal development of the zygote. Such genes are called as maternal-effect genes. The […]
CSIR NET Life Science Previous Year Questions and Solution on EXTRA CHROMOSOMAL INHERITANCE
Understanding Genetics Cross Result in Drosophila
12. In Drosophila, a cross was set between a male homozygous for alleles S+/S+ (phenotype A) and a female homozygous of S/S (phenotype B) (‘S+‘ being a dominant allele and […]
