If both the alleles of a gene express themselves in heterozygotes, it is called as
A) Partial or incomplete dominance
B) Co-dominance
C) Complete dominance
D) Over-dominance
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Performance of the heterozygote for a gene exceeds that of both the concerned homozygotes, this is known as
A) Partial or incomplete dominance
B) Co-dominance
C) Complete dominance
D) Over-dominance
At the time of gamete formation, two alleles of a gene present in the F₁ separate and pass into different gametes; this is known as
A) Segregation
B) Uniform Expressivity
C) Independent assortment
D) Variable Expressivity
The transmission of any one allele of one gene into a gamete does not affect the likelihood of transmission into the same gamete of the alleles of the other gene, is known as
A) Segregation
B) Uniform Expressivity
C) Independent assortment
D) Variable Expressivity
When a single major gene (oligogene) affects more than one character, it is known as
A) Pleiotropy
B) Modifying genes
C) Threshold characters
D) Variable Expressivity
Ability of a gene to express itself in the individuals carrying it in the appropriate genotype is known as
A) Pleiotropy
B) Expressivity
C) Penetrance
D) Variable Expressivity
Ability of a gene to express itself uniformly in all the individuals that carry it in the appropriate genotypes is known as
A) Pleiotropy
B) Expressivity
C) Penetrance
D) Complete penetrance
Choose the correct statement
A) Inheritance of quantitative characters is based on the multiple factor hypothesis, polygenic inheritance, continuous variation, and estimation of environmental effects on quantitative characters
B) Inheritance of qualitative characters is based on dominance, segregation, and independent assortment, penetrance and expressivity, pleiotropy, gene interaction, linkage, threshold character, and modifying genes
C) Both (i) and (ii)
D) None of these
The frequency with which a gene produces a phenotypic or visible effect in the individuals that carry it is known as
A) Pleiotropy
B) Expressivity
C) Penetrance
D) Variable Expressivity
The degree of phenotypic expression of a penetrant gene is called as
A) Pleiotropy
B) Expressivity
C) Penetrance
D) Complete penetrance

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