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DerKrebs [107]
3 years ago
11

What is continental drift​

Biology
2 answers:
Tema [17]3 years ago
4 0
The gradual movement of the continents across the Earth’s surface throughout geological time.
Eddi Din [679]3 years ago
3 0

The contiental drift was a theory that scientist Alfred Wegner came up with. He said that the continents looked like a puzzle and when you combine them together, it was a super-continent, Alfred named this super-continent Pangea. He thought that the continents drifted apart from each other and formed the world of what we know today.    

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Why do traits that give an organism a disadvantage exist during meiosis? Please be as descriptive as possible and write it in yo
Roman55 [17]

Answer:

Meiosis is important because during sexual reproduction, it ensures that all produced organisms have the correct number of chromosomes. It is also responsible for producing genetic variations during the process of recombination, and it repairs some genetic defects.

The disadvantage from not having the trait normally arises only after the reproductive stage of the individual's lifecycle is mostly over. This is a special case of "no strong pressure", because evolution selects genes, not the organism. In other words the beneficial mutation does not alter the reproductive fitness.

Explanation:

Meiosis is important because during sexual reproduction, it ensures that all produced organisms have the correct number of chromosomes. It is also responsible for producing genetic variations during the process of recombination, and it repairs some genetic defects.

6 0
3 years ago
There are initially 1000 bacteria in a culture. The number of bacteria doubles each hour. The number of bacteria N present after
polet [3.4K]
There are several information's of immense importance already given in the question. Based on those information's the answer can be easily deduced. 
Initial number of bacteria in the culture = 1000
Number of bacteria after t hours = 1000 (2)^t
Then
1000 (2)^t = 50000
2 ^t = 50
t = 5.6

I hope the procedure is clear enough for you to understand.
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