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

duplication
translocation heterozygote
deficiency
haploid organism

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

disruption of mitotic spindle
centriole elongation
All of these
chromosome lagging

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Animal Biotechnology Chromosomes
Which of the following denotes a pair of contrasting characters?

Homozygous
Genotype
Alleles
Phenotype

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Animal Biotechnology Chromosomes
A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as

karyogram
zymogram
idiogram
chromogram

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

9
3
6
12

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