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vivado [14]
3 years ago
11

Fewer than _____ of blastocysts inserted through ivf successfully implant into the uterus and become newborns.

Biology
2 answers:
finlep [7]3 years ago
7 0

Fewer than 3 of blastocysts inserted through IVF successfully implant into the uterus and become newborns


It has been shown that  different countries use different numbers of blastocysts for the IVF, regulated by the law. It is important to keep the blastocyst number low, to decrease the number of multiple pregnancy.



trapecia [35]3 years ago
6 0

the answer is 3.

The blastocyst is a structure formed in the early development of mammals. It possesses an inner cell mass which subsequently forms the embryo. The outer layer of the blastocyst consists of cells collectively called the trophoblast. This layer surrounds the inner cell mass and a fluid-filled cavity known as the blastocoele.

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7 0
3 years ago
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;

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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.

6 0
3 years ago
9. The human male reproductive system is
juin [17]

Answer:

A. A

Explanation:

It's the testicles

8 0
2 years ago
All the chromosomes in a diploid cell are paired. True or False
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True A diploid is a cell that contains two haploid sets of chromosomes
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Step2247 [10]

Answer:

I think its a

Explanation:

Adding water is also helping  the body get the rest of nutrions that it needs to function and you need to at least need to add a bit of water in your diet your body

8 0
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