Complete the dialogue using words and expressions from the list above

Student 1: Excuse me!

Student 2: Yes?

Student 1: Is there eponymic equivalent in its meaning to “sex chromatin”?

Student 2: Yes, there is. It’s ………. body.

Student 1: In what cells is sex chromatin detected in normal conditions?

Student 2: It is detected only in (……….) cells in females.

Student 1: Is the number of X–chromosomes equal to the number of bodies of sex-chromatin?

Student 2: It is equal to the number of bodies of sex-chromatin plus one.

Student 1: Do the cells of different tissues show different ………. of sex chromatin?

Student 2: Precisely. For instance, 80 – 90% of ………. nuclei contain sex chromatin, while only 20 – 40% of cell nuclei can be observed in the ………. epithelium.

Student 1: Where is sex chromatin localized?

Student 2: It is localized in the nucleus, mostly attached to the nuclear membrane by thin ………..

Student 1: How many bodies of sex-chromatin do organisms have in their ……….?

Student 2: All organisms with two X-chromosomes in their karyotypes contain only one body of “sex-chromatin”. In the case of ………. of X-chromosome the nucleus contains two bodies of sex- chromatin.

Student 1: What is the mechanism of the inactivation of one of the two X-chromosomes conditioned by?

Student 2: It is conditioned by ………. of the DNA in the inactivated chromosome.

Student 1: Can sex chromatin present in normal gametes of any sex?

Student 2: ……….. Because………………. ……………………...