STD 11 - 4. Animal kingdom — NEET STD 11 Science — Question

Trichoderma species, free living fungi, are present in root ecosystems are potentially useful as

The parts of human brain that helps in regulation of sexual behaviour, expression of excitement, pleasure, rage, fear etc. are:

Both proteins, actin and myosin are arranged in a rod-like structure in the muscles

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.

In which of the following animal/s scales are absent?

Functions of association areas in cerebral cortex includes

Symptoms of amoebiasis

Approximate volume of air a healthy man can expire or inspire per minute is:

Assertion : Organ transplantation patients are given immunosuppressive drugs.

Reason : Transplanted tissue has antigens which stimulate the specific immune response of the recipient.

An injury to diencephalon may result in