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Animal Biotechnology Chromosomes

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

haploid organism
duplication
deficiency
translocation heterozygote

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Animal Biotechnology Chromosomes
Incase of inversion when the inverted segment of chromosome includes centromere, it is known as

inverted inversion
paracentric inversion
double inversion
pericentric inversion

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Animal Biotechnology Chromosomes
Hairy wing character of Drosophila is due to

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

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

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

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Animal Biotechnology Chromosomes
If two genes show 50% recombination

they are on different chromosomes
they are on same chromosome but far apart
they are closely located on the same chromosome
both (a) and (b)

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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

environmental influence
penetrance
expressivity
inheritance strength

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