Write short notes on the
(i) Bauplan concept
ii) Hox gene
ii) Cephalization.
Answers
Answer:
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Answer:
(i) the generalized structural body plan that characterizes a group of organisms and especially a major taxon (such as a phylum) All feline species have inherited the unique Bauplan of cats, and cannot deviate from this commonality as they adapt, each in its own particular way.
(ii)Hox genes, a subset of homeobox genes, are a group of related genes that specify regions of the body plan of an embryo along the head-tail axis of animals. Hox proteins encode and specify the characteristics of 'position', ensuring that the correct structures form in the correct places of the body.
(iii) the concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development.