Biology, 22.11.2019 09:31 BreBreDoeCCx
The order cetacea includes modern-day whales, dolphins, and porpoises. these marine mammals share common characteristics that have led scientists to make a conclusion about their evolutionary history. cetaceans:
lack gills and must breathe air
give birth to live young rather than lay eggs
have fin bones that are similarly shaped to limb bones
have spines that flex up and down rather than side to side
the characteristics of cetaceans provide evidence that
a. they evolved from land mammals.
b. the theory of evolution is incorrect.
c. they evolved from air-breathing fish.
d. the bodies of their ancestors never changed.
Answers: 1
Biology, 22.06.2019 20:10, wolffee895
Which of the following is the smallest unit that would contain a complete copy of the entire human genome? a) one human somatic cell b) one human chromosome c) all of the dna of one human d) one human gene
Answers: 2
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