Which of the following statements ae correct? i. Expressivity of a gene is defined as the ability to express itself uniformly in all the individuals with same genotype. II. When one gene masks, inhibits or suppresses the expression of other, the phenomena is called epistasis. iii. Gene penetrance is the ability of gene to express itself in an individual that carries it. iv. Inhibiting genes interact in such a way that one dominant gene produces its effect irrespective of the presence or absence of other.A. I,II,and IIIB. II and IVC. III and IVD. II and III

Which of the following statements ae correct? i. Expressivity of a gen

1.	Which of the following statements ae correct? i. Expressivity of a gene is defined as the ability to express itself uniformly in all the individuals with same genotype. II. When one gene masks, inhibits or suppresses the expression of other, the phenomena is called epistasis. iii. Gene penetrance is the ability of gene to express itself in an individual that carries it. iv. Inhibiting genes interact in such a way that one dominant gene produces its effect irrespective of the presence or absence of other.A. I,II,and IIIB. II and IVC. III and IVD. II and III
Answer» Correct Answer - A

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When a wheat variety of red kernel is crossed with white kerneled wheat, the `F_(2)` ratio would beA. 1:10:4:1B. `9:7`C. 1:2:4:2:4:2:1D. 1:4:6:4:1
A black female is test crossed, producing 6 black offsprings. The Probability that a black heterozygous female would this by chance alonge is approximatelyA. 0.5B. 0.25C. 0.01D. cannot be determined
The proginies of test cross can easily be analysed to predict theA. Genotype of the test organismsB. Phenotype of the test organismsC. Ratio of (a) and (b)D. all of the above
A 15:1 `F_(2)` ratio of a cross between a wheat variety with red kernels (homozygous for two dominant genes) and another with white kernels showsA. Polygenic inheritanceB. That the two genes are complementaryC. Single factor inheritanceD. That it is a test cross
A heterozygous parent producesA. Onel king of gameteB. Two kinds of gametes each having two allelesC. Two kinds of gametes each having one allele with equal proportionD. two kind of gametes
Organism of pureline is that which produces individuals ofA. Dominant charactersB. Recessive charactersC. Its own charactersD. intermediate type
Indentify the recessive trait among the following given below.A. Coloured lint in cottonB. Rust immunity in wheatC. Round starcny kernal in maizeD. Branched habit in sunflower
In a monhybird cross when `F_(1)` is crossed with homozygous dominant parent then which type of offspring will obtainA. Dominant: Recessive 3: 1B. Only recessiveC. Dominant: recessive 1:1D. No recessive
In a dihybrid cross of heterozygotes, what proportion of the offsprin will be phenotypically dominant for both traits?A. 3/4B. 3/16C. 1/4D. 9/16
In a typical Mendelian cross, which is a dihybrid cross, one parent is homoxygous for both dominant traits and another parent is homozygous for both recessive traits. In the `F_(2)` -generation, both parental combination and recombinantions appear. The phenotypic ratio of parental combinations to recombinations isA. `10:6`B. `12:4`C. `9:7`D. `15:1`

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