13. A cis-trans complementation test is carried out to identify (1) if two mutations are allelic in nature. (2) if two genes interact with one another. (3) the number of […]
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CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
Complementation between apricot and sepia eye mutants in Drosophila
12. A fly with apricot coloured eye was crossed With a septa eyed fly of opposite sex. In Fl all flies were Wild tvpe. The genes responsible for the two […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
When do two recessive mutations in a heterozygote still give a mutant phenotype?
11. In a heterozygous two recessive mutation at different site will give mutant phenotype when genes involved are (1) Allelic and placed in cis (2) Allelic and placed in trans […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
Why two black-body mutants of Drosophila giving wild-type progeny are non‑allelic
10. Two different mutant of Drosophilla gives a mutant black body color. When these mutants are crossed all progeny have wild type color, It means mutation are (1) Codominant (2) […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
How is the complementation test performed in E. coli?
9. In E. coli the complementation test is done by (1) Transformation (2) Obtaining merozygotes (3) Obtaining heterokaryons (4) Making them diploid Concept E. coli is normally haploid, so it has […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
What are two different mutant versions of the same gene called?
8. Mutation at two different loci of the same gene X results in altered functions. These two mutated versions of gene X are called (1) alleles (2) Complementation group (3) […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
Probability that a second child has a recessive disease expressed only in blood group O
7. A recessive inherited disease is expressed only in individuals of blood group O and not expressed in blood groups A, B or AB. Alleles controlling the disease and blood […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
Which baby matches an O Rh+ mother and AB Rh– father?
6. A newborn baby got mixed up with other babies in a hospital. If the mother is of O blood group and is Rh +veand the father is of AB […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
Which baby belongs to AB Rh+ mother and O Rh– father?
5. The newborn baby of a mother having blood group AB, Rh+ and father having blood group O, Rh–, got mixed withother babies in the hospital. The baby with which […]
CSIR NET Life Science Previous Year Questions and Solution on CONCEPTS OF GENE
Can ABO blood groups alone identify parents when three babies are mixed up?
In a hospital three babies were mixed up. The blood group of the babies were A. B and AB. In order to identify the parents of the babies, the blood […]
