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Animal Biotechnology Chromosomes

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

20
18
16
17

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Animal Biotechnology Chromosomes
Raphanobrassica is a classical example of

nullisomy
allopolyploidy
None of these
aneuploidy

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Animal Biotechnology Chromosomes
Hairy wing character of Drosophila is due to

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

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Animal Biotechnology Chromosomes
The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as

expressivity
penetrance
inheritance strength
environmental influence

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Animal Biotechnology Chromosomes
How does dosage compensation in Drosophila occur?

Chimerism
Hypertranscription of male X chromosome
Hypotranscription of female X chromosome
X inactivation in females

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Animal Biotechnology Chromosomes
A cross shaped (+) or a ring involving four chromosomes may be formed during metaphase I in case of

translocation heterozygote
duplication
haploid organism
deficiency

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