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Animal Biotechnology Chromosomes

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

Genotype
Homozygous
Phenotype
Alleles

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Animal Biotechnology Chromosomes
Bar eye character of Drosophila is due to

deletion in region of 16A of X chromosome
due to presence of additional X-chromosome
due to a point mutation in eye-locus
duplication in region of 16A of X chromosome

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Animal Biotechnology Chromosomes
How does dosage compensation in Drosophila occur?

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

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Animal Biotechnology Chromosomes
The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as

environmental influence
expressivity
penetrance
inheritance percent

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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
pericentric inversion
double inversion

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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

pericentric inversion
paracentric inversion
double inversion
none of these

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