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bearhunter [10]
3 years ago
13

3. If you locate an animal that has segmentation and cephalization as well as deuterostome embryonic

Biology
2 answers:
lilavasa [31]3 years ago
8 0
So, I decided to take another whack at this, specifically number 3, and at first I didn't really try to answer 'cause I have no clue what the word dueterostome means, but I do know that, for the other two criteria, A, arthropods is the only one that fits both. 
also, on 6, it is b, because I remembered what an anther is and it has nothing to do with the eggs (it's the testes,  pretty much) 
and if I had to guess at 8, I would say it is d because all the others are characteristics of sexual reproduction. (I'm not sure of this, though, because I'm not sure where this defines the line for mitosis, both go through it, but at different points in the process, so I assume it isn't that one.)

bonufazy [111]3 years ago
7 0
3. Should be Anthropods. 
6. The embryo develops in a seedling. 8. Should be dependent on fertilization. 


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~convert energy ~have fluids inside of it ~enclosed by two membranes ~oxygen and carbon dioxide are involved in its processes Th
netineya [11]
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Which of the following statements regarding restriction enzymes is NOT true?
Anni [7]

Answer:

The correct option is option A

Explanation:

Restriction enzymes are endocleases that cleave DNA fragment (<u>of usually four, five or six nucleotide long</u>) at <u>specific sites to produce blunt or sticky ends</u>. They <u>recognize palindromic sequences of host DNA when cleaving the specific sites</u>. The sequences below (on complementary strands) give an example of a palindromic sequences.

5'-CCC║GGG-3'

3'-GGG║CCC-5'

As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.

5'- G║AATTC -3'

3'- CTTAA║G -5'

The explanation above shows options C and D are right while option A is wrong (hence the correct option).

Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites <u>which prevents restriction enzymes from recognizing restriction sites of their DNA;</u> this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.

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3 years ago
If T=20% What is A, G &amp; C
fiasKO [112]

Answer:

i dont understand

Explanation:

free points on me who want em

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katrin2010 [14]

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Explanation:

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