Which of the following accurately reflects the beliefs on earth's early history?
a. scientist...
Which of the following accurately reflects the beliefs on earth's early history?
a. scientists believe that dna may have existed before rna.
b. scientists believe the early atmosphere lacked the oxygen necessary to support modern human life.
c. scientists believe that microspheres nearly prevented the development of early life.
d. scientists believe oxygen was plentiful in the early atmosphere.
Answers: 1
Biology, 21.06.2019 20:00, Clover1072
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In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.
Answers: 2
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Mathematics, 17.01.2020 18:31
Mathematics, 17.01.2020 18:31