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Anna71 [15]
3 years ago
7

Explain why reptiles and birds are placed in the same clade.

Biology
1 answer:
Andre45 [30]3 years ago
6 0

Answer:

because they both have jaws, lungs, and claws or nails and they include some of the same common ancestors.

Explanation:

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Which of the following investigators was (were) responsible for the following discovery? In DNA from any species, the amount of
Zarrin [17]

Answer :Erwin Chargaff   a Biochemist

Explanation:

He formulated the base paring of double helix of DNA. He reasoned that since the percentage of four  DNA  bases are of this proportions in human;

                                  Adenine=30.9% and Thymine =29.4%;

                                  Guanine=19.9% and Cytosine =19.8%

Then,  the amount of adenine will always be equal to thymine,

And the amount of Guanine equals to cytosine based on this percentages of distribution.  

(Adenine and Guanine are large, molecule of Purines, while thymine and Cytosine are Pyrimidine)  

 

He concluded (although scientist believed, he did not explicitly stated this) that this should be the base paring patterns in DNA molecule. This is the first Chargaff Rule.

His second rule is that the DNA composition, in the relative amount of the four bases Adenine, Thymine, Cytosine and Guanine varies in proportion from one organisms to another. And this is the basis of molecular diversity.

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3 years ago
Giving brainliest, please help
lorasvet [3.4K]

Answer:

1. BbRr

2. Black with rough hair

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3 0
4 years ago
No.3 plzz ...?<br>Any one ​
Snowcat [4.5K]

2^n=32

n=5

It doesn't really match up with the options so not sure, my best guess would be either choosing 16 or 4. 16 in case the person calculated as 16 times 2 = 32 and 4 bc its the closest.

5 0
3 years ago
Which of the following is a promise advertisers could make to promote healthy living using fitness equipment? "Use full body mov
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The answer is the second option.

The first and fourth options do not involve fitness equipment.
While the third option includes "the heaviest weights," they are the results of "three complete workouts," not the means to a healthier lifestyle.
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Which process causes the temperature to decrease as one goes higher in the mesosphere?
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<span> fewer particles to convert UV light into heat</span>
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