Practicing Success
Practicing Success
CUET Preparation Today
Match List - I with List - II.
Choose the correct answer from the options given below: |
(A)-(II), (B)-(IV), (C)-(I), (D)-(III) (A)-(I), (B)-(III), (C)-(II), (D)-(IV) (A)-(II), (B)-(I), (C)-(IV), (D)-(III) (A)-(III), (B)-(IV), (C)-(II), (D)-(I) |
(A)-(II), (B)-(IV), (C)-(I), (D)-(III) |
The correct answer is Option (1)- (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
Polygenic inheritance occurs when one character is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are skin colour, eye colour .
A heterozygous organism is the one having dissimilar alleles for a particular gene. It has a dominant allele and a recessive allele. So, by definition, the expressing allele is the dominant one and the non-expressing one is the recessive allele.
The example of ABO blood grouping provides a good example of multiple allele because there are more than two, i.e., three alleles, governing the same character. The majority of human genes are thought to have more than two normal versions or alleles. Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type. The inheritance of flower colour in the dog flower (snapdragon or Antirrhinum sp.) is a good example to understand incomplete dominance. In a cross between true-breeding red-flowered (RR) and true- breeding white-flowered plants (rr), the F1 (Rr) was pink. |
