The three basic life history traits do no not include:
1. Age-sex structure of the population
2. Age when reproduction begins
3. How often reproduction occurs
4. Number of offspring per reproductive episode
Which of the following is correct sequence of events in the origin of life?
I. formation of protobionts
II. synthesis of organic monomers
III. synthesis of organic polymers
IV. formation of DNA based genetic systems
1. I, III, II, IV
2. II, III, I, IV
3. II, III, IV, I
4. I, II, III, IV
Following are the two statements regarding the origin of life
a. The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
b. The first autotrophic organisms were the chemoautotrophs that never released oxygen
On the above statements which one of the following options is correct?
1. (a) is correct but (b) is false
2. (b) is correct but (a) is false
3. Both (a) and (b) are correct
4. Both (a) and (b) are false
Which of the following will not counter natural selection?
1. genetic drift
2. gene flow
3. mutation
4. Unlimited resources
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Viviparity is considered to be more evolved because:
1. the young ones are left on their own
2. the young ones are protected by a thick shell
3. the young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
4. the embryo takes a long time to develop