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yulyashka [42]
3 years ago
8

Not too sure about this question ↑ ​

Biology
2 answers:
Mashutka [201]3 years ago
7 0

Answer:

the umbilical cord is connected to both the mother and the unborn child and so tranfers nutrients from the mothers blood to that of the baby's blood

Katarina [22]3 years ago
3 0

Answer:

Due to ethical reasons. Obtaining stem cells from the embryoes would require fertilisation of the embryo in order to obtain the embryonic stem cells and the embryo may not develop into a fetus upon extraction of stem cells (I may be wrong on this). On the other hand, umbilical cord stem cells, although are more mature stem cells, could be obtained after childbirth and does not raise the same ethical concerns as that of the embryo

Explanation:

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Explanation:

5 0
3 years ago
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I need help please thank you.
Fantom [35]
Hey!
8= B : adenine with thymine , guanine with cytosine.

9= False : its not single , *dual* helical structure.

10= Every humans' DNA is different but its as similar as our relatives' DNAs as far as i know so its False.

11 = The two backbones of the DNA molecule consists a deoxyribose sugar ^with 5 carbone^ and a phosphate so the correct answer is B

12= Procaryotes' Genomes are simpler- structured than eukaryotes' so procayotes DNA is 1/1000 of eukaryotes.I couldnt translate the options correctly (im not native sorry) but i think its B according to my knowledge of that XD

13= the amount of adenine, guanine, thymime and cytosine must be same so the correct option is %40as well.

Hope it helps!!!
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