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garik1379 [7]
3 years ago
14

What is the main force of evolution?

Biology
1 answer:
Yanka [14]3 years ago
3 0

Answer:

We have to evolve or we will just slowly die off.

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Write the complementary sequence for the following DNA sequence, in order from 3' to 5': 5′−CGATATTGAGCTAAGCTT−3′ Use all capita
sveta [45]

Answer:

3'-GCTATAACTCGATTCGAA-5'

Explanation:

The DNA is a macromolecule formed by two strands of polynucleotides forming a double helix.

These chains are composed of monomers called nucleotides, there are 4 different types in DNA, called nitrogenous bases: two purines, guanine (G) and adenine (A) and two pyrimidines, thymine (T) and cytosine (C). They are joined by covalent bonds in each chain.

These bases are complementary: G with C, and A with T between the two strands by hydrogen bonds making the double-stranded DNA molecule.

A sequence 5'-CGAT-3' is equivalent to a sequence written 3'-ATCG-5' , because the 5' and 3' notation defines the direction of reading. If one strand is noted 5' to 3', then the complementary strand will be from 3' to 5' in the same sense.

So, all we need to do is write the complementary bases from the 3' end to 5':

5'-CGATATTGAGCTAAGCTT-3'  

3'-GCTATAACTCGATTCGAA-5'  (answer)

5 0
3 years ago
An element has atomic number 21 and atomic mass 44.95592 identify the incorrect statement regarding how to interpret and use thi
Snezhnost [94]

Not judging, but you probably would've gotten the answer if you posted in the Chemistry subject.

Answer:

C would be the incorrect statement.

Explanation:

When doing the calculations for finding the neutrons, you would get around 24 neutrons, since the mass is about 45 amu. 21 would be the number of protons.

Hope this helps :)

6 0
3 years ago
Starch is digested by amylase in the mouth, but it is not digested in the stomach.
Snowcat [4.5K]

Answer: B. the pH in the stomach is not suitable for the amylase to work.

Explanation: When carbohydrates reach the stomach no further chemical breakdown occurs because the amylase enzyme does not function in the acidic conditions of the stomach.

6 0
3 years ago
Bethany thinks her dog is overweight so she switches the dog to a new brand of food for overweight dogs. the switch in dog food
gtnhenbr [62]

In psychology, the manipulation is described a change done, in order to obtain a certain result, but this does not guaranty that the result would be seen in future.  

In this case, the lady (Bethany) switches the diet of the dog. She thinks that switching the food of the dog can help the dog to lose weight. This may or may not be true.  

So, this case is an example of manipulation.  


5 0
3 years ago
Which two systems does the nose play a role in?
pav-90 [236]
Respiratory and immune
5 0
3 years ago
Read 2 more answers
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