Match the terms in Column I with their description in Column II and choose the correct option.
a) Dominance i) Many genes govern a single character
b) Codominance ii) In a heterozygous organism only one allele expresses itself
c) Pleiotropy iii) In a heterozygous organism both alleles express themselves fully
d) Polygenic inheritance iv) A single gene influences many characters
a b c d
1. ii i iv iii
2. ii iii iv i
3. iv i ii iii
4. iv iii i ii

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answer is B.

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Detailed Solution

Dominance	In a heterozygous organism only one allele expresses itself
Codominance	In a heterozygous organism both alleles express themselves fully
Pleiotropy	A single gene influences many characters
Polygenic inheritance	Many genes govern a single character

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