Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child ?
Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child ?
- [AIPMT 2011]
- A
Two $X$ chromosomes
- B
Only one $Y$ chromosome
- C
Only one $X$ chromosome
- D
One $X$ and one $Y$ chromosome
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Mendel published his work on inheritance of characters in $1865$ but it remained unrecognised till $1900$ because
$(a)$ He could not provide any physical proof for the existence of factors
$(b)$ His concept of factors as stable, discrete units that controlled the expression of traits did not find acceptance from the contemporaries
$(c)$ Mendel's approach of using mathematics to explain biological phenomena was totally old
$(d)$ Communication was not easy (as it is now)
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$(a)$ He could not provide any physical proof for the existence of factors
$(b)$ His concept of factors as stable, discrete units that controlled the expression of traits did not find acceptance from the contemporaries
$(c)$ Mendel's approach of using mathematics to explain biological phenomena was totally old
$(d)$ Communication was not easy (as it is now)
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