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Animal Biotechnology Chromosomes

Animal Biotechnology Chromosomes
In an organism, the chromosome number is maintained constant because of

synapsis
independent assortment
crossing over
DNA duplication

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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

deficiency
duplication
haploid organism
translocation heterozygote

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Animal Biotechnology Chromosomes
How many chromosomes are there in Caernorhabditis elegans?

9
6
12
3

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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

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

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Animal Biotechnology Chromosomes
Transmission of a gene from male parent to female child to male grand child is known as

quantitative inheritance
holandric inheritance
maternal inheritance
criss-cross inheritance

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Animal Biotechnology Chromosomes
An odd number of cross overs in inverted region will result into formation of a dicentric chromatid and acentric chromatid at anaphase I incase of

none of these
double inversion
paracentric inversion
pericentric inversion

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