1)All fossils are ancestral to some extant species? True or False 2)Which of the

ID: 72666 • Letter: 1

Question

1)All fossils are ancestral to some extant species? True or False

2)Which of the following was likely used by life first?

d)DNA because it has a genotype, the potential to self-replicate, and is very stable.

3)How can reproductive isolation be beneficial to natural populations?

a)Migration between populations entails a high risk of death, and organisms can increase their fitness by not migrating for reproductive purposes.

a)Carbohydrates because they are stable, essential for life, and have a phenotype.

1. False. Some of the fossils might have ended up without their progeny to undergo evolution. There is no chance of such fossils to be ancestors.

2. b. RNA, because of all the properties associated with it to self replicate and code for a genotype and phenotype

3. b. Traits that are adaptive in one environment can be maladaptive in a different environment

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