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Korolek [52]
3 years ago
6

How might cancer stem cells originate ?

Biology
1 answer:
OLga [1]3 years ago
8 0
This figure illustrates 3 hypotheses of how a cancer stem cell may arise: (1) A stem cell undergoes a mutation, (2) A progenitor cell undergoes two or more mutations, or (3) A fully differentiated cell undergoes several mutations that drive it back to a stem-like state.
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Hybridization _____.
Alinara [238K]

Answer:

The correct answer is: c) usually produces offspring that cannot reproduce.

Explanation:

Hybridization, also knowns as selective breeding, is an <u>artificial process</u><u> that involves selecting parents with specific characteristics in order to obtain an offspring with the same traits</u>.

Hybridization is very common and has been performed by humans for thousands of years: from selective breeding crop plants, to do so with dogs in order to create more desirable breeds.

Option A is incorrect because hybridation does not occur in nature, it is an artificial process.

Option B is incorrect because hybridation often happens when the selected parents are chosen to reproduce (by a human).

Option D is correct because an important amount of hybrids are sterile (for example: mules).

Option D is incorrect as well because the offspring is not identical: it shares a combination of genes from both parents.

3 0
3 years ago
Read 2 more answers
Factory part of cell membrane
rusak2 [61]
Mitochondria is the 'factory' or the 'powerhouse' of the cell! I've just been learning about them too! 
6 0
3 years ago
The rate at which alcohol is eliminated from the body may be increased by?
Nikolay [14]
As a rule of thumb, a person will eliminate one average drink or . 5 oz (15 ml) of alcohol per hour. Several factors influence this rate. The rate of elimination tends to be higher when the blood alcohol concentration in the body is very high.
3 0
3 years ago
Use the graph to answer the question.
Lynna [10]

Answer:

D D B A

Explanation:

D D B A

7 0
3 years ago
Which sentence best describes the process of convection? A. A rock melts when magma touches it. B. Sunlight travels through spac
8_murik_8 [283]


D is correct. Cool air sinks, which forces warm air to rise.

Convection is when warm material rises and cool material sinks

Hope it helps


4 0
3 years ago
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