Question

Q)Give an example of characteristics being used to determine how close two species are in evolutionary terms.

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Answer 1

Answer:

homologus : species having same basic structure but different function

example: fore limbs of human and bird have same structure but different function

they have common ancestors

annalogus : they have same function but different structure

example: wings of bird and wings of bat are quite different but have same function

they don't have a common ancestors

Answer 2

Basic structure of Forelimbs in human and birds is one such example of a characteristic which shows closeness of two species in evolutionary terms.

Closeness of species is determined by presence or absence of fundamental characteristics and correlated characters. Two species of bacteria are closely related as they possess fundamental similarities of occurrence of nucleoid (instead of nucleus), absence of membrane covered cell organelles and presence of 70 S ribosomes. Human beings are close to monkeys because they possess similar eukaryotic multicellular body with vertebrate.

Closeness of species is determined by presence or absence of fundamental characteristics and correlated characters. Two species of bacteria are closely related as they possess fundamental similarities of occurrence of nucleoid (instead of nucleus), absence of membrane covered cell organelles and presence of 70 S ribosomes. Human beings are close to monkeys because they possess similar eukaryotic multicellular body with vertebrate.(ii) These days DNA matching is undertaken to find out the degree of closeness of the species. (✿ ♥‿♥)(♥ω♥*)。･:*:･(✿◕3◕)❤