STD 12 - 2. human reproduction — NEET STD 11 Science — Question

Uricotelic mode of passing out nitrogenous wastes is found in

Study the below given statements and choose the correct statements with respect to linkage and recombination ?
(i) Morgan carried out several dihybrid crosses in Drosophila to study genes that were sex-linked.
(ii) Linkage is the phenomenon, where two or more linked genes are always inherited together and their recombination frequency in a test cross progeny is less than 50%.
(iii) All the genes present on one chromosome form a linkage group and its number in organism is equal to haploid number of chromosomes.
(iv) When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters.
(v) In Drosophila genes for white and yellow were very tightly linked and showed only 1.3 percent recombination.
(vi) In Drosophila genes for white and miniature wing showed 37.2 per cent recombination.

Statement I: Ammonia is the most toxic form of nitrogenous waste which require least amount of water for its elimination.
Statement II: Urea is the least toxic form of nitrogenous waste, can be removed with a minimum loss of water.

Which accessory digestive gland found in cockroach?

Select the correct option.

The maximum volume of air a person can breathe in after a forced expiration is known as

Which one occurs in greatest proportion

Condoms are made up of thin rubber/latex sheath which is used to cover

The process of releasing the ripe female gamete from the ovary is called