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Q.Which type of sex determination is found in humans?

(i) XX-XY
(ii) ZW-ZZ
(iii) XX-XO
(iv) ZZ-ZO
Odisha ChseOdisha CHSE +2 Science Board Exam 2022MCQ· 1mImportance★★★★★
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Humans show the XX-XY type of sex determination, with the male being heterogametic.

In humans, each individual has 22 pairs of autosomes plus one pair of sex chromosomes. Females carry two X chromosomes (XX) and are homogametic, producing only X-bearing eggs. Males carry one X and one Y (XY) and are heterogametic, producing X-bearing and Y-bearing sperm in equal numbers. The sperm therefore determines the …

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