write about on sex determination. pls moderator ashu di ke answer delete mat karo. unhone ap ka kya bigada hain hu
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sex determination is genetic: males and females have different alleles or even different genes that specify their sexual morphology. In animals this is often accompanied by chromosomal differences, generally through combinations of XY, ZW, XO, ZO chromosomes, or haplodiploidy.
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Sex determination in humans is XX-XY type. ... Females have two same chromosomes (XX) whereas males have two different sex chromosomes (XY). Hence, females have 44 + XX chromosomes and males have 44 + XY chromosomes. During gamete formation, female produces only one type of gamete 22 + X.
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