A cross shaped (+) or a ring involving four chromosomes may be formed during metaphase I in case of haploid organism deficiency translocation heterozygote duplication TRUE ANSWER : ? YOUR ANSWER : ?
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 double inversion none of these paracentric inversion TRUE ANSWER : ? YOUR ANSWER : ?
Diethyl stilbestrol (DES), a synthetic estrogen causes disruption of mitotic spindle All of these centriole elongation chromosome lagging TRUE ANSWER : ? YOUR ANSWER : ?
Bar eye character of Drosophila is due to deletion in region of 16A of X chromosome due to a point mutation in eye-locus due to presence of additional X-chromosome duplication in region of 16A of X chromosome TRUE ANSWER : ? YOUR ANSWER : ?
The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as inheritance percent expressivity environmental influence penetrance TRUE ANSWER : ? YOUR ANSWER : ?
A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as none of these a cloning map a genetic map a physical map TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is correct when a character shows continuous variation assuming a normal distribution? Many of the variation is due to fluctuation of climate It is governed by many genes with small cumulative effect None of these It is not controlled genetically TRUE ANSWER : ? YOUR ANSWER : ?
In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters) will show a phenotypic ratio of 1:1:1:1 9:3:3:1 3:1:1:3 1:2:2:1 TRUE ANSWER : ? YOUR ANSWER : ?
If two genes show 50% recombination both (a) and (b) they are on same chromosome but far apart they are on different chromosomes they are closely located on the same chromosome TRUE ANSWER : ? YOUR ANSWER : ?