State whether the following statement is true or false.
Genes are specific sequences of bases on a chromosome.

True

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False

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Solution

The correct option is A True
Genes:
Genes are molecular units of heredity which are formed by a specific sequence of nitrogenous bases on the DNA.
Specific sequence of bases in a gene code for a specific protein that carries out different functions in the body.
Change of even a single base in this sequence can result in a defective gene.

Final answer: The given statement is true.

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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. State whether the following statements are true or false .
A metabolic pathway is a sequence of chemical reactions in which each step is controlled by its own specific enzymes.

Q. Select the statements that are true for genes.

i. Genes are specific sequences of nucleotides in a DNA molecule.
ii. A gene does not store information for protein synthesis.
iii. In individuals of a given species, a specific gene is located on a particular chromosome.
iv. Each chromosome has only one gene.
v. Genome identification is the basis of DNA fingerprinting.

State whether the statements are true or false.
The ovum contains XX chromosomes.

Q. State whether the following statements are true or false:

Each normal cell in our body contains 23 chromosomes.

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State whether the following statement is true or false.Genes are specific sequences of bases on a chromosome.

State whether the following statement is true or false.
Genes are specific sequences of bases on a chromosome.