(B) In grasshoppers,sex determination follows the $XO$ type mechanism. In this system,males have only one $X$ chromosome,while females have two $X$ ch

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(B) In grasshoppers,sex determination follows the $XO$ type mechanism. In this system,males have only one $X$ chromosome,while females have two $X$ chromosomes. The autosomes are represented as $AA$. Therefore,the genetic constitution of a male grasshopper is $AA + XO$,where $A$ represents autosomes and $O$ indicates the absence of a second sex chromosome.

Class 12 Biology Principles of Inheritance and Variation Sex determination

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Which of the following represents the genetic constitution of a male grasshopper?

A
$(AA + XX)$
B
$(AA + XO)$
C
$(WW + ZZ)$
D
$(ZZ + WW)$

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Principles of Inheritance and Variation

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Sex determination

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Which of the following represents the genetic constitution of a male grasshopper?

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$A$: One drumstick per nucleus is present in the neutrophil of a normal female.$R$: It is absent in the neutrophil of a male.

$A$ couple has three daughters. What is the probability of having a son in the next pregnancy (in $,\%$)?

In bugs and cockroaches,the sex determination takes place by

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Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?

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$A$: One drumstick per nucleus is present in the neutrophil of a normal female.
$R$: It is absent in the neutrophil of a male.