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QveST [7]
3 years ago
8

In 1997, Dolly the sheep was cloned. Which of the following processes was used?

Biology
1 answer:
allsm [11]3 years ago
4 0

Answer:

Option (D).

Explanation:

Dolly was the first sheep cloned in the year 1997. The sheep has been cloned from the adult somatic cells. The sheep was cloned by  Keith Campbell, Ian Wilmut.

The adult's cell nucleus was fused with the enucleated sheep egg. The egg was then incubated in the surrogate female. The telomeres of Dolly sheep was found to be shorter than the normal individuals.

Thus, the correct answer is option (D).

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Stolb23 [73]

1.  

17) Derived from mesenchyme. C) Tendon  

Tendon is fibrous connective tissue (made of collagen) that connects muscle to bone.

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Epidermis is one of the three skin layers (other two are dermis and hypodermis) of skin that provides a barrier to infection from environmental pathogens.

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Cardiac muscle is found in heart which pumps blood through the whole body.

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2.  

21) Smooth muscle. B) Moderate regenerative ability.  

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When the cell of cardiac muscle-cardiac muscle cells die, they are not replaced.

24) Areolar connective tissue. D) Regenerates extremely well

Areolar connective tissue is loose connective tissue that hold organs in place. Fibroblasts are cells widely dispersed in this tissue

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6 0
3 years ago
Is the function of an endocrine system to move muscles or deliver oxygen or break nutrients?
Pani-rosa [81]

The endocrine system is made of glands that secrete hormones. These hormones help regulate the organs and cells activity. The hormones among other things control your metabolism.

5 0
3 years ago
1) If you
erica [24]

Answer:

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The climate was relatively hot and dry, and much of the land was covered with large deserts. Unlike today, there were no polar ice caps.

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4 0
2 years ago
The process of making changes in the DNA code of a living organism is called
hram777 [196]
It is called genetic engineering
5 0
3 years ago
What 3 functions do proteins have in a plasma membrane?*
Aliun [14]

Answer:

Explanation:

Proteins in the plasma membrane have several functions based on their components, location etc. For instance, if the protein transcends the entire plasma membrane it could be a transport protein, responsible for the import and export of certain molecules between the cell and the extracellular matrix (ECM). If the proteins are resting at the surface of the cell, facing the ECM, their role could be to detect components in the ECM, relaying a series of messages back to the nucleus so that the cell can ‘decide’ what it should do with this information (is it being told it should undergo apoptosis, should it begin to divide, should it migrate?). As well as this, it could be involved in the detection of foreign bodies such as pathogens. This is an extremely job for these proteins because if the cell does come in contact with a pathogen, the cell can use these proteins to engulf the pathogen and through a series of steps, present the antigen on their major histocompatibility complexes (either 1 or 2 depending on the cell type) or HLA’s for human cells. Thus it can be concluded that protein functions vary widely in the plasma membrane and due to the vast number of proteins that can be found there, it’s difficult to narrow down the exact main of functions of all these proteins put together.

4 0
2 years ago
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