Question

a litter of pigs is born three are female and three are male which set of symbols correctly describe the gender of each piglet

(A) X,X,X,Y,Y,Y

(B) XX, XY ,XX, XY ,XY, XX

(C) XXY,XXY,XXY,XX,XX,XX

(D) XX,XX,XX,YY,YY,YY

Answer 1

Ans. (B).  XX, XY ,XX, XY ,XY, XX .

In pigs, the XY-sex determination system is found. According to this system, sex of the organisms can be determined by the presence of a pair of sex chromosomes.

Females have two X chromosomes (represented by XX), and known as homogametic sex, while males have one X and one Y chromosomes (represented by XY), and known as heterogametic sex.

Thus, the correct answer is option (B).  

Answer 2

The correct combination of the symbol is  XX, XY, XX,  XY, XY, XX. Option B is correct.

What is Genotype?

• It is the combination of alleles that are found in the zygote is called genotype.

• In mammals, Y - chromosome determines the gender of the zygote. In males one X and one Y- chromosome is found.

• In females, two X-chromosomes are found. A zygote is the first diploid cell formed after fertilization.

Therefore,  the correct combination of the symbol is  XX, XY, XX, XY, XY, XX. Option B is correct.

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