Questions
21
Exchange of segments between non homologous chromosomes is best known as
Answer: translocation
22
Incase of inversion when the inverted segment of chromosome includes centromere, it is known as
Answer: pericentric inversion
23
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
Answer: paracentric inversion
24
The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as
Answer: penetrance
25
Diethyl stilbestrol (DES), a synthetic estrogen causes
Answer: all of the above
26
The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as
Answer: expressivity
27
Which of the following denotes a pair of contrasting characters?
Answer: Alleles
28
Hairy wing character of Drosophila is due to
Answer: duplication in region of chromosome
29
A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as
Answer: idiogram
30
A cross shaped (+) or a ring involving four chromosomes may be formed during metaphase I in case of
Answer: translocation heterozygote
