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Alecsey [184]
3 years ago
6

Hominid that first made clothing and art and is still here today

Biology
1 answer:
igor_vitrenko [27]3 years ago
4 0
This would be homo sapiens because that's what we are considered today, we evolved most likely from the species homo Erectus which was about  1.8 to 1.3 million years ago, that had the same skull as us, we as homo sapiens evolved 200,000 years ago where we came from Africa, we had the same skull and opposable thumbs that we have now  
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Why can’t your body heal an amputation, such as the loss of a finger, the same way it can heal a cut?
katrin2010 [14]

Answer:

For a limb to regenerate, you need bone, muscle, blood vessels and nerves. There are adult stem cells, a kind of undifferentiated cell that can become specialized, that regenerate muscle, but they don't seem to activate.

3 0
3 years ago
The interaction between DNA and histone proteins (forming nucleosomes) plays a key role in the regulation of gene expression in
ladessa [460]

Answer:

A. The chromatin near cis-regulatory sequences will be more closed and there will be less transcription.

Explanation:

In the presence of histones, the cis-regulatory sequences of DNA like promoter, enhancers etc. are not exposed. The function of the histone acetyltransferases (HATS) is to cause chromosome decondensation i.e. removal of histones from the DNA so that transcription of the DNA could occur. Histone acetyltransferases (HATS) cause acetylation of lysine amino acid of the histone proteins. Acetyl group is negatively charged so the acetylation of histone proteins leads to the removal of their positive charge which ultimately leads to the decrease in the interaction between N terminal of histones and negatively charged phosphate group of the DNA molecule. As soon as histones are removed from the DNA where cis-regulatory sequences are located, the DNA becomes accessible for transcription.

But here a drug has been added which blocks the activity of histone acetyltransferases (HATS) in cancer cells. So it is quite evident that in these cells, histones will not get removed from the cis-regulatory sequences of DNA so the DNA will be more closer or tightly packed as a result of which  less transcription will occur.

7 0
3 years ago
If the producer level of the energy pyramid start with 5000 calories how many calories will transfer to the secondary consumers
Strike441 [17]

Explanation:

Only 10% of calories will be transfered to the next higher level.

5000 * 0.1 = 500.

500 calories will transfer to the secondary consumers.

8 0
2 years ago
What is used to keep track of the gamates and possible offsprings combination
Sever21 [200]

Is Punnett Square what you are looking for?

4 0
3 years ago
Read 2 more answers
The contracting and relaxing of the heart is known as the?
kipiarov [429]

Answer:

Cardiac Cycle

Explanation:

Contracting= Systolic

Relaxing=Diastolic

5 0
3 years ago
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