Question

differentiate betweenXX and XY chromosomes

5 mark question
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Answer 1

XX CHROMOSOMES :

➠ Female have the two same chromosomes XX.

$\qquad \diamond$ It is called homogametic sex.

XY CHROMOSOMES :

➠ Male have the two different kinds of the chromosomes X and Y.

$\qquad \diamond$ It is called heterogametic sex.

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$\large\sf\blue{\underline{\underline{Extra \ Information \ :-}}}$

• The sex of a gender is defined by the chromosomes.
• Human have 23 pairs of chromosomes.
• Human chromosomes have 22 pairs of autosome and 1 pair of sex chromosome X and Y.
• Humans and some other species are diploid.

Answer 2

$\large\sf\blue{\underline{\underline{XX \ chromosomes :}}}$

Female have the same type of chromosomes XX.

• It is called homogametic sex.

$\large\sf\blue{\underline{\underline{XX \ chromosomes :}}}$

Male have the two different types of chromosomes and they are XY.

• It is called heterogametic sex.

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$\large \red {\underline {\underline {\bf Additional \ Information \ :}}}$

$\leadsto$ There are 23 pairs of chromosomes in humans.

$\leadsto$ In humans, 22 pairs are autosomes and 1 pair is of sex chromosomes X and Y.

$\leadsto$ The sex (male or female) of an organism is depends on the chromosomes.

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