Biology - Study Mode

[#76] Their cells have a very well defined nucleus ,in which nuclear material (chromosomes or DNA) is enclosed in double nuclear membrane.
Correct Answer

(D) Eukaryotes

Explanation

Solution: Eukaryotes cells have a very well defined nucleus, in which nuclear material (chromosomes or DNA) is enclosed in double nuclear membrane.

[#77] Which hormone causes emotional disturbance?
Correct Answer

(B) Oxytocin

Explanation

Solution: Oxytocin causes emotional disturbance.

[#78] Haemophilia is a hereditary disease carried by
Correct Answer

(A) Females and expressed by males

Explanation

Solution: Haemophilia is a hereditary disease carried by females and expressed by males.

[#79] The sex of a newborn baby is determined by the chromosome inherited from
Correct Answer

(A) The Father

Explanation

Solution: The sex of a baby is determined by two sex chromosomes inherited from both the genetic parents. A baby will normally inherit one sex chromosome from the mother and one from the father. A woman has two X chromosomes and thus gives either of her X chromosomes. The father has one X chromosome and one Y chromosome, can give either his X or Y chromosome. The egg (from the mother) already contains an X chromosome. Therefore the sex of a baby is determined by the X or Y chromosome of the sperm cell from the father.

[#80] In 1910, who proved the idea of W.S.Sutton that genes are located on chromosomes?
Correct Answer

(A) T.H.Morgan

Explanation

Solution: In 1910, T.H.Morgan proved the idea of W.S.Sutton that genes are located on chromosomes.