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leva [86]
3 years ago
14

Compare the outcome of mitosis vs. meiosis.

Biology
2 answers:
Minchanka [31]3 years ago
7 0

Answer:

Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells

Explanation:

Katen [24]3 years ago
5 0
Mitosis:
- one cell division
- no crossing over
- produces 2 diploid daughter cells
- daughter cells are identical

Meiosis:
- 2 cell divisions occur
- crossing over occurs in prophase
- produces 4 haploid daughter cells
- daughter cells are genetically different
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In a famous experiment, Matthew Meselson and Franklin Stahl grew E. coli cells in a medium containing only the "heavy" isotope o
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Answer:

3rd generation = 2 Hybrid DNA molecules + 6 Light DNA

In Percentage 2÷8 × 100 = 25%

25% of the DNA are hybrid

Explanation:

Semi conservative model proposed by Watson and Crick states that one strand of the DNA comes from parent DNA which act as a template for the other newly formed strand.

First generation:

If cells containing 15 N DNA are transferred to a medium with only 14 N then in initial first generation two parent strands becomes separated and act as template for newly synthesized strands. this means that in first generation both DNA molecules are hybrid, one strand of 15 N DNA and other strand of 14 N DNA

Ist generation = 2 Hybrid DNA molecules

Second generation:

In Second generation these two hybrid molecules become unzip. Two strands are 15N and two strands are 14N. All these 4 strands act as template and 4 new strands are synthesized. The molecules of Hybrid DNA is still 2 with 2 molecules of Light DNA.

2nd generation = 2 Hybrid DNA molecules + 2 Light DNA

Third generation:

In Third generation these two hybrid molecules and two light DNA molecules become unzip. Two strands are of 15N and six strands are of 14N. All these 8 strands act as template and 8 new strands are synthesized. The molecules of Hybrid DNA is still 2 with 6 molecules of Light DNA.

3rd generation = 2 Hybrid DNA molecules + 6 Light DNA

In Percentage 2÷8 × 100 = 25%

25% of the DNA are hybrid

4 0
3 years ago
Why would the structures of organism look so differently even though they come from common ancestors
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Answer:

Even though they might have a common ancestor there might be a closer common ancestor to the original ancestors than the organism you're looking at.

I hope this helps

Explanation:

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