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Animal Biotechnology Chromosomes

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

DNA duplication
independent assortment
synapsis
crossing over

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

maternal inheritance
criss-cross inheritance
holandric inheritance
quantitative inheritance

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

20
16
18
17

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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

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

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

Genotype
Homozygous
Phenotype
Alleles

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Animal Biotechnology Chromosomes
Hairy wing character of Drosophila is due to

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

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