Select the statement that describes the characteristics of genes.

(1) Proteins are never coded by DNA.

(2) Self-replicating materials are present in all living organisms as the main constituent of their genetic material.

(3) In an individual of a particular species, a specific gene is located on a particular chromosome.

(4) One chromosome can code one protein.

1&2

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3&4

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4&1

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2&3

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Solution

The correct option is D
2&3

Genes are specific sequences of bases in a DNA molecule. It is a self-replicating material, which is present in nearly all living organisms as the main constituent of chromosomes. A gene can code for a specific character of an individual. In an individual of a given species, a specific gene is located on a particular chromosome.

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Similar questions

Select the statements that describe characteristics of genes :

(i) genes are specific sequence of bases in a DNA molecule

(ii) a gene does not code for proteins

(iii) in individuals of a given species, a specific gene is located on a particular chromosome

(iv) each chromosome has only one gene

(a) (i) and (ii) (b) (i) and (iii) (c) (i) and (iv) (d) (ii) and (iv)

Question 21
Select the statements that describe characteristics of genes.

(i) Genes are the specific sequence of bases in a DNA molecule.
(ii) A gene does not code for proteins.
(iii) In individuals of a given species, a specific gene is located on a particular chromosome.
(iv) Each chromosome has only one gene.

(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)

Q. Select the option that excludes characteristics applicable to plasmids
(a) Circular DNA
(b) Linear DNA
(c) Present in all bacteria
(d) Contain essential genes\
(e) Extra chromosomal self-replicating

Q. Genes are segments of DNA that contain the code for a specific protein.

Q. Arrange these discoveries in chronological order from oldest to latest.
i. Isolation of a compound called nuclein.
ii. “Heredity factors”
iii. Genes are located on chromosomes
iv. DNA is genetic material

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