In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is /are :

(i) large chromosome (ii) small chromosome (iii) Y chromosome (iv) X chromosome

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

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Solution

(c) (iii) and (iv)

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Question 6
In human males, all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are

(i) Large chromosome
(ii) Small chromosome
(iii) Y-chromosome
(iv) X-chromosome

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

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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

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\begin{matrix} Column A & Column B (a) Prophase & (i) Chromosomes arranged on equatorial plate (b) Metaphase & (i i) Formation of nuclear membrane (c) Anaphase & (i i i) Condensation of chromosomes (d) Telophase & (i v) Spindle fibres pull chromatids \end{matrix}

Q. A normal sperm in humans possess
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(ii) a Y chromosome
(iii) 23 chromosomes

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In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is /are : (i) large chromosome (ii) small chromosome (iii) Y chromosome (iv) X chromosome (a) (i) and (ii) (b) (iii) only (c) (iii) and (iv) (d) (ii) and (iv)

(c) (iii) and (iv)

In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is /are :

(i) large chromosome (ii) small chromosome (iii) Y chromosome (iv) X chromosome

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