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36. In summer squash, white colour fruit (W) is dominant over yellow colour (w) and disc-shaped phenotype (D) is dominant over sphere-shaped phenotype (d). Determine the genotype of the parents […]

35. A phenotypically normal fruit fly was crossed to another fly whose phenotype was not recorded. Of the progeny, 3/8 were wild type, 3/8 had ebony body color, 1/8 had […]

34. Mendel crossed tall pea plants with dwarf ones. The F1 plants were all tall. When these F1 plants were selfed to produce F2 generation, he got a 3: 1 […]

33. Assuming a 1 : 1 sex ratio. what is the probability that three children from the same parents will consist of two daughters and one son? (1) 0.375         (2) […]

32. In a plant, male sterility is caused by the presence of a dominant allele for a nuclear gene (Ms). There are also lines which carry a gene whose dominant […]

31. A plant of the genotype AaBb is selfed. The two genes are linked and are 50 map units apart. What proportion of the progeny will haw the genotype aabb? […]

30. How many genetically different gametes can be made by an individual of genotype AaBbccDDEe? (1) 3        (2) 5 (3) 1/4     (4) 32 Step-by-step reasoning Genotype: Aa Bb cc DD […]

29. Assuming that the A, B, C and D genes are not linked. The probability of a progeny being AaBBccDd from a corss between AABbccDd and aaBBccDD parents will be […]

28. In the following example, 3 independently assorting genes are known to govern coat color in mice. The genotype of few of the coat colors is given below: Agouti: A-B-C- […]

27. Genes A, B and C. control three phenotypes which assort independently; A plant with the genotype Aa Bb Cc is selfed. What is the probability for progeny which show […]