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Animal Biotechnology Chromosomes

Animal Biotechnology Chromosomes
In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters) will show a phenotypic ratio of

1:2:2:1
1:1:1:1
9:3:3:1
3:1:1:3

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Animal Biotechnology Chromosomes
Diethyl stilbestrol (DES), a synthetic estrogen causes

chromosome lagging
All of these
centriole elongation
disruption of mitotic spindle

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Animal Biotechnology Chromosomes
How many chromosomes are there in the budding yeast (S. cerevisiae)?

17
20
16
18

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Animal Biotechnology Chromosomes
Hairy wing character of Drosophila is due to

duplication in region of chromosome
due to presence of additional X-chromosome
deletion in region of chromosome
due to a point mutation

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Animal Biotechnology Chromosomes
Raphanobrassica is a classical example of

allopolyploidy
nullisomy
None of these
aneuploidy

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Animal Biotechnology Chromosomes
A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as

none of these
a genetic map
a cloning map
a physical map

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