ANIMAL BIOTECHNOLOGY
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?
ANS. paracentric inversion
2. The percentage of individual with a given genotype, which exhibits the associated
phenotype, is defined as?
ANS. penetrance
3. Diethyl stilbestrol (DES), a synthetic estrogen causes?
ANS. Chromosome lagging, disruption of mitotic spindle, centriole elongation
4. Bar eye character of Drosophila is due to?
ANS. duplication in region of 16A of X chromosome
5. Transmission of a gene from male parent to female child to male grand child is known
as?
ANS. Matrilineal inheritance
6. The degree or extent to which a given genotype is expressed phenotypically in a
particular individual is defined as?
ANS. expressivity
7. How many chromosomes are there in Caernorhabditis elegans?
ANS.6
8. If two genes show 50% recombination?
ANS. they are on different chromosomes, they are on same chromosome but far apart
9.What is an allele?
ANS. a pair of contrasting characters?
10. A map of chromosomes that utilizes cloned and sequenced DNA fragments rather
than genetic markers is known as?
ANS. a physical map
11. In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters)
will show a phenotypic ratio of?
ANS. 1:1:1:1
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?
ANS. paracentric inversion
2. The percentage of individual with a given genotype, which exhibits the associated
phenotype, is defined as?
ANS. penetrance
3. Diethyl stilbestrol (DES), a synthetic estrogen causes?
ANS. Chromosome lagging, disruption of mitotic spindle, centriole elongation
4. Bar eye character of Drosophila is due to?
ANS. duplication in region of 16A of X chromosome
5. Transmission of a gene from male parent to female child to male grand child is known
as?
ANS. Matrilineal inheritance
6. The degree or extent to which a given genotype is expressed phenotypically in a
particular individual is defined as?
ANS. expressivity
7. How many chromosomes are there in Caernorhabditis elegans?
ANS.6
8. If two genes show 50% recombination?
ANS. they are on different chromosomes, they are on same chromosome but far apart
9.What is an allele?
ANS. a pair of contrasting characters?
10. A map of chromosomes that utilizes cloned and sequenced DNA fragments rather
than genetic markers is known as?
ANS. a physical map
11. In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters)
will show a phenotypic ratio of?
ANS. 1:1:1:1
