Q. If you cross a eosin male Drosophila with a red eyed female, the daughters would have________________

View solution

Q. If a Drosophila is having XXY sex chromosomal combination with one X bearing white allele for eye colour and another X having eosin allele for eye colour, what would be its phenotype?

View solution

Q. The difference in epistasis and gene interaction is ___________________

View solution

Q. Gene interaction always modifies the normal Mendalian ratio.

View solution

Q. In case of comb shape of a chicken, which of the following when inbred will breed true?

View solution

Q. You cross a true breeding pea comb chicken with a single comb chicken. What will you observe in the F2 generation?

View solution

Q. If you cross two walnuts, which of the following is impossible?

View solution

Q. If a true breeding rose combed chicken is crossed to walnut combed chicken, what are the only possibilities of the F1 progeny?

View solution

Q. In summer squash if you cross different varieties of true breeding sphere shaped squash, you get a disk shaped progeny. What phenomenon is seen here?

View solution

Q. Which one of the following summer squash would be true breeding?

View solution

Q. If you cross a true breeding long with a true breeding disc shaped squash, what will you get in the F1?

View solution

Q. If you cross two sphere shaped squash, you always get a disc.

View solution

Q. You cross two heterozygous disc shaped squash. What will be the ratio obtained?

View solution

Q. The cross between a true breeding sphere shaped and a long shaped squash gives 30 sphere squash in F2. What is the total number of expected progeny?

View solution

Q. In case of two gene interaction, the gene which is masking the expression of another is called_____________ and the gene whose expression is masked is called_______________

View solution

Q. Epistasis is the interaction between_____________ genes.

View solution

Q. Epistasis is the interaction between two genes producing a new phenotype.

View solution

Q. What is the dihybrid phenotypic ratio for recessive epistasis in an F22 generation?

View solution

Q. In mouse agouti locus is hypostatic to pigment development locus. If C is for pigment development, and A is for agouti, and recessive alleles in agouti locus gives black colour and recessive in pigment locus gives white colour, what will be the phenotype of A/- c/c and a/a c/c.

View solution

Q. The cross between a white mouse and a black mouse _______________

View solution