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Assertion (A): There is expression of on...

Assertion (A): There is expression of only one gene of the parental character in a Mendelian Monohybrid cross in `F_1` generation.
Reason (R): In a dissimilar pair of factors one member of the pair dominates the other.

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

C

(A) is true but (R) is false.

D

(A) is false but (R) is true.

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Explore conceptually related problems

In a dissimilar pair of factor one member of the pair dominates the other.

Assertion :- Factors occurs in pairs in an organism. Reaosn :- In a dissimilar pair of facrtors one member of the pair dominates the other.

Assertion :- Law of dominance is based on the fact that both the characters are recovered as such in F_(2) generation. Reason :- In a pair of factors one member always dominates the other.

Read of following statements regarding Mendelian inheritance and choose the correct option. 1. Mendel's experiments had small sample size which gave greater credibility to the data. 2. A true breeding line shows a stable trait inheritance and expression for several generations. 3. In a dissimilar pair of factors, one member of the pair dominates over the other. 4. A recessive parental trait is expressed only in its heterozygous condition. 5. Two alleles of a gene are located on homologous sites on homologous chromosomes.

Read the following statements regarding Mendelian inheritance and choose the correct option 1. Mendel's experiments had samll sample size which gave greater credibility to the data 2. A true breeding line shows a stable trait inheritance and expression for several generations 3. In a dissimilar pair of factors, one member of the pair dominates over the other 4. A recessive parental trait is expressed only in its heterozygous condition 5. Two alleles of a gene are located on homologous sites on homologus chromosomes

What is the ratio of one pair of contrasting characters in F_(2) of a dihybrid cross

Mark the odd one (w.r.t. F_(2) generation of Mendelian dihybrid cross)

Assertion :- The segregation of alleles in a random process and so there is a 50% chance of a gamete containing either allele. Reason :- By the process of mitosis, the alleles of the parental pair separtes from each other & only one allele in transmitted to a gamete.

XII BOARDS PREVIOUS YEAR-QUESTION PAPER 2022 TERM 1 SET 1-SECTION-B
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  11. In Pisum sativum the flower colour may be Violet (V) or White (v) . Wh...

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  12. Which one of the gene pair is expected to give a ratio of 1:1:1:1 in t...

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  13. The progency of a cross between two snap-dragon plants , heterozygous ...

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  14. Study the given pedigree of a family and select the trait that shows t...

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  15. A child with blood Group A has father with blood group B and mother wi...

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  16. In a dihybrid Mendelian cross , garden pea plants heterozygous for vio...

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  17. A region of coding strand of DNA has the following nucleotide sequence...

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  18. A DNA molecule is 160 base pairs long. It has 20% adenine. How many cy...

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  19. A template strand in a bacterial DNA has the following base sequence :...

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  20. Colour-blindness is a sex linked recessive trait in humans. A man with...

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