Model Paper 10 — NEET STD 11 Science — Question

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

Spleen is

Urinary bladder is absent in

Maximum absorption of water in mammals is in

Which one of the following is commonly used in transfer of foreign DNA into crop plants?

Which of the following statement(s) regarding cell junctions is/are correct?

The principal nitrogenous excretory compound in humans is synthesised

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.