Biology
Among lion, tiger and domestic cat, all the three have the same number of 38 chromosomes, yet they have different appearances. How do you account for such differences?
Answer
All species have a fixed number of chromosomes. However, the characteristics of species including physical appearance, body functions, behavior, etc. are not simply the outcome of chromosome number, but these are the result of the units called genes which the chromosomes carry. The lion and the cat have the same number of chromosomes (38). Yet one is distinct from the other in body size, appearance, colour, behavior, etc. All such characteristics of an organism are the result of the genes located on the chromosomes.
Related Questions
Which one of the following genotypes is homozygous dominant and which one homozygous recessive in regard to tongue rolling:
Rr, rr, RR?Rewrite the correct form of the statement by changing the first or the last word only:
(a) Duplicated chromosomes remain attached at a point termed as centrosome.
(b) The full complement of DNA of an organism is termed as genetics.
(c) The inheritable feature of an organism is termed as heredity.
(d) Terminal flower position is a dominant trait of pea flower.
(e) Alternative forms of a gene are called traits.
List any three features of garden pea with their dominant and recessive traits.
Explain why generally only the male child suffers from colour blindness and not the female?