Which among the following statements is/are correct with respect to the law of dominance?

A. Each character is controlled by pair of discrete units called factors

B. In a dissimilar pair of factors one is dominant and the other is recessive

C. It explains the expression of one character in $F_{1}$ and both characters in $F_{2}$ generation.

D. Explains the proportion of 3:1 obtained in $F_{2}$ generation

A & B only

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C& D only

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C &A only

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A, B, C & D

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Solution

The correct option is D
A, B, C & D

Law of dominance explains that out of the two factors determining a character, one is dominant- this is the one that gets expressed in both homozygous and heterozygous conditions. Dominant character appears in $F_{1}$ and $F_{2}$ generations. Recessive character disappears in $F_{1}$ and reappears in $F_{2}$ generation.

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Similar questions

Which among the following statements is/are correct with respect to the law of dominance?

A. Each character is controlled by pair of discrete units called factors.

B. In a dissimilar pair of factors one is dominant and the other is recessive.

C. It explains the expression of one trait in $F_{1}$ and both traits in $F_{2}$ generation.

D. Explains the proportion of phenotypes, 3:1 obtained in $F_{2}$ generation.

Consider the following statements and select the options stating which ones are True (T) and which ones are False (F) on the basis of Mendel’s law of dominance.

i. The discrete unit controlling a particular character is called a factor.

ii. Factors occur in pairs known as alleles, of which one is recessive while the other one dominant.

iii. Alleles show blending and both the traits do not recover as such in $F_{2}$ generation.

iv. Factors occur in pairs.

Q. When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters. The statement explains which of the following laws/principles of Mendel?

Q. Which law of Mendel is explained in the given statement?
"In a dissimilar pair of factors, one member of the pair express in presence of other members"

Q. What will be the number of genotype in

F_{2}

generation if a character is controlled by 4 pairs of polygenes?

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