Q. Which one of the following has dominant allele in both gene locus?

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Q. Coat colour in Labrador retriever is controlled by epistasis. B specifies black pigment, b is for brown pigment (recessive) and E locus determines the expression of B locus. Which one of the following is wrong?

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Q. Epistasis can produce a ratio of 12:3:1.

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Q. In case of dominant epistasis which of the following will have the same expression, when A is the epistatic locus?

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Q. Dominant epistasis ratio with A as epistatic gene 12:3:1 corresponds to ________________

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Q. Which one of the following is not the case of epistasis?

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Q. Which of the following is incorrect about the graying of coat colour of horse?

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Q. In case of summer squash, the W locus shows dominant epistasis over the Y locus. W locus develop white colour while /- give yellow and y/y gives green. If you cross a yellow and a green summer squash you can’t get______________

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Q. In case of summer squash which of the following is not right.

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Q. Flower colour in sweet pea shows duplicate epistasis, if purple colour is dominant what is the F2 ratio?

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Q. Which of the following condition in recessive duplicate epistasis will give the odd phenotype?

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Q. If you cross two different strains of white flower you may get a purple flower in a sweet pea plant.

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Q. Choose the off one out in case of duplicate recessive episasis.

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Q. If you self cross purple flower in sweet pea, you will get__________

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Q. Self crossing a white flower of sweet pea would give a ____________________

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Q. In sweet pea a white substance is first converted to a ___________ substance by 1st gene and that to a ______________ substance by 2nd gene to give a purple flower.

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Q. What is the phenotypic ratio in case of duplicate dominant epistasis?

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Q. Shepherd’s purse has two shape heart and narrow. If you cross a true breeding heart to a true breeding narrow, F1 will give___________

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Q. The 15/16 of the duplicate dominant epistasis doesn’t correspond to _____________

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Q. You crossed two heart shaped Shepherd’s purse which is heterozygous at one locus and homozygous recessive at other gene locus, what would be the ratio of heart shaped and narrow in F1?

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