The cross in plants or in Drosophila involves crossing
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(a) between two genotypes with recessive trait (b) between two F₁ hybrids (c) the F₁ hybrid with a double recessive genotype (d) between […]
In our society women are blamed for producing female children. Choose the correct answer for the sex-determination in humans
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(a) Due to the some defect in the women (b) Due to some defect […]
Select the incorrect statement about health from the following:
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(a) Galactosemia is an inborn error of metabolism (b) Small population size results in random gentic drift in a population (c) Baldness is […]
Which one of the following is a wrong statement regarding mutations?
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(a) Deletion and insertion of base pairs cause frame-shift mutations (b) Cancer cells commonly show chromosomal aberrations (c) UV and Gamma […]
Which one of the following conditions correctly discribes the manner of determining the sex in the given example?
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(a) Homozygous sex chromosomes (ZZ) determine female sex in birds (b) XO type of […]
Which one of the following condition in humans, is correctly matched with its chromosomal abnormality / linkage?
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(a) Klinefelters syndrome-44 autosomes a XXY (b) Colour blindness-Y-linked (c) Erythroblastosis foetalis-X-linked (d) Down syndrome-44 autosomes […]
Which of the following statements is not true of two genes that show 50% recombination frequency?
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(a) The genes are tightly linked (b) The genes show independent assortment (c) IF the genes […]
If two persons with ‘AB’ blood group marry and have sufficiently large number of children these children could ve classified as ‘A’ blood gorup: ‘AB’ blood group: ‘B’ blood group in 1 : 2 : […]
A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
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(a) Blood […]
When two unrelated individuals or lines are crossed, the performance of F hybrid is often superior to both parents. This phenomenon is called
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(a) heterosis (b) transformation (c) splicing (d) metamorphosis
Correct […]
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