A chemical mutagen is
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Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
The science dealing with study of inheritance and variation is
Crossing over in meiosis occurs in
Chromosomes exhibit minimum coiling during
Base substitutions from base analogues I are called
In humans, an example of sex-linked trait is
A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
A giant chromosome having many chromo-nemata lying side by side all along their length is called
An offspring of two homozygous parents different from one another by alleles at only one gene locus…
Which disease results from the genetic inability to synthesize a single enzyme ?
The condition in which only one allele of a pair is present is known as
A child is bom with an extra chromosome in each of its cells. This is usually the result of
Diakinesis is characterised by
Exhibition of superiority by a hybrid over both of its parents is called
The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
How many meiosis will be required to produce 102 pollen-grains ?
The genetic constitution of an organism is known as
The first person to induce mutations was
Among the following which is a test cross?
Lethal genes are those which
Which one of the following chemical characteristics is not common to all living beings ?
Albinism in com plants is best described as
Mutations which are not dominant are not lost by a gene pooL This is known as
Klinefelter's syndrome is developed when the chromosome in male is
The scientists who rediscovered the Mendel's laws are
Down's syndrome is an example of
The term 'meiosis' was coined bv
The nuclear membrane completely disappears during
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