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Snezhnost [94]
3 years ago
7

Do ferns require water for fertilization

Biology
1 answer:
viva [34]3 years ago
6 0
Yes, they do they only successfully reproduce in wet places, or after the rain.
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Why do you think a growing human population means mass extinction events for earths animals
Mazyrski [523]

if we wipe out an animals natural habitat, or introduce new wildlife the animals could die. This could cause a major problem in the areas ecosystem. That is what i know, and i think that major problems would happen, like to many of one species, which takes all the food from the other species, causing major problems, and even more animals to die.

7 0
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The Meselson and Stahl experiment starts with E. coli containing 15N/15N labeled DNA grown in 14N media. Which result did Mesels
cricket20 [7]

Answer:

No 15N/15N labeled DNA was observed in second generation

Explanation:

Meselson and Stahl were doing an experiment to find out the semi-conservative mode of replication of DNA. The first cultured bacteria in 15N medium which was containing a heavy isotope of nitrogen. The DNA synthesized here had more density. After that they transferred the bacteria to the 14N containing medium. When bacteria reproduced and new strands of DNA were synthesized, they observed the following -

  • The first generation had hybrid DNA with 15N/14N strands
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In this way they proved that one strand of DNA is kept conserved during the replication.

4 0
3 years ago
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Is this DNA replication or Transcription?<br> AAA-UUU-AUA-GCA- ACG<br> UUU-AAA-UAU-CGU-UGC
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Well for starters that is not DNA it is RNA so it has already been transcribed, so your answer should be replication.
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What major organ would you expect to find in the lymphatic system?
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The major organ that you would find in the lymphatic system would be the spleen.
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In the modern classification system birds are in a separate _______ from reptiles, but fossil evidence shows they have _________
ollegr [7]
Group

the same ancestry.

Common ancestry is identified in the genes. Selection forces are the drives to these physical and composition changes of an organism however, it can be traced back.

<span>Adaptation processes occur to help species survive and thrive in the ecological balance of life. </span>
6 0
3 years ago
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