1. Tardigrade
  2. Question
  3. Biology
  4. The following blanks can be filled only by numbers. 1. Gregor Mendel conducted hybridization experiments on garden peas for (P) years. 2. Mendel selected (Q) true-breeding pea plant varieties. 3. In a human population, there are (R) alleles for ABO Blood group. 4. In Drosophila, genes for white eye and yellow body show (S)% recombination. The correct arrangement is

Q. The following blanks can be filled only by numbers.
Gregor Mendel conducted hybridization experiments on garden peas for (P) years.
Mendel selected (Q) true-breeding pea plant varieties.
In a human population, there are (R) alleles for ABO Blood group.
In Drosophila, genes for white eye and yellow body show (S)% recombination.
The correct arrangement is

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Solution:

Gregor Mendel, conducted hybridisation experiments on garden peas for 7 years (1856-1863) and proposed the laws of inheritance in living organisms. Mendel selected 14 true-breeding pea plant varieties, as pairs which were similar except for one character with contrasting traits. In a human population there are 3 alleles for ABO Blood group (IA, IB and i). In Drosophila, genes for white eye and yellow body show 1.3 % recombination