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Biotechnology - Animal Biotechnology Chromosomes

Exercise

  • Section 1
"When ambition ends, happiness begins."
- (Proverb)
1. 

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
A. pericentric inversion
B. paracentric inversion
C. double inversion
D. none of these
2. 

The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as
A. penetrance
B. expressivity
C. inheritance percent
D. environmental influence
3. 

Diethyl stilbestrol (DES), a synthetic estrogen causes
A. chromosome lagging
B. disruption of mitotic spindle
C. centriole elongation
D. all of the above
4. 

Bar eye character of Drosophila is due to
A. duplication in region of 16A of X chromosome
B. deletion in region of 16A of X chromosome
C. due to presence of additional X-chromosome
D. due to a point mutation in eye-locus
5. 

Transmission of a gene from male parent to female child to male grand child is known as
A. holandric inheritance
B. quantitative inheritance
C. criss-cross inheritance
D. maternal inheritance

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