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NeTakaya
4 years ago
8

What is a stem cell ?

Biology
2 answers:
Alexus [3.1K]4 years ago
3 0

Answer:

an undifferentiated cell of a multi cellular organism which is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cell arise by differentiation.

Nostrana [21]4 years ago
3 0

Answer:

A

Explanation:

Stem cells are special human cells that are able to develop into many different cell types. This can range from muscle cells to brain cells. In some cases, they can also fix damaged tissues

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The __nervous system carries impulses from the central nervous system to the heart and other organs.
daser333 [38]

Answer:

ANS - Autonomic Nervous system.

Explanation:

Autonomic nervous system (ANS) is responsible for regulating the involuntary control of smooth, heart muscles and some glands and organs.

Whereas the somatic nervous system (SNS) regulates the voluntary contraction of the skeletal muscles.

8 0
4 years ago
Read 2 more answers
Gradual changes in the frequency of diseases over long periods are known as
Kaylis [27]
Gradual changes in the frequency of diseases over long periods are known as SECULAR TIME TRENDS. For example, the rate of mortality in USA due to coronary heart diseases over a period of time. Onset of puberty in girls is also a secular time trend.
Secular time trend is also referred as Secular Variation and Secular Drift.
6 0
3 years ago
16. Why should the recessive phenotype be used first to determine the q squared value instead of the dominant phenotype to deter
podryga [215]

The recessive phenotype is used first to determine the q squared value because it is only expressed when h0m0zygous.

<h3>What is a recessive phenotype?</h3>

A recessive phenotype is a phenotype which expresses the recessive trait of a gene.

The recessive phenotype is always h0m0zygous for that triat to be expressed.

In the Hardy-Weinberg equilibrium equation, the allele and phenotype frequencies are given as follows:

  • p^2 + 2pq + q^2 = 1

where;

  • p^2 is the h0m0zygous dominant phenotype frequency
  • 2pq is the heterozygous phenotype frequency
  • q^2 is the h0m0zygous recessive phenotype frequency

Therefore, the recessive phenotype is used first to determine the q squared value because it is only expressed when h0m0zygous.

Learn more about recessive phenotype at: brainly.com/question/22117

8 0
2 years ago
If a label indicated the presence of a radioactive isotope, you would know what
Citrus2011 [14]

Answer:

Radioisotopes are radioactive isotopes of an element

Explanation: Radioactive isotopes are detected by: photographic film.

a cloud or bubble chamber.

a liquid scintillation detector.

a Geiger-Muller counter.

5 0
3 years ago
Read 2 more answers
Which lists the substances from least acidic to most acidic
brilliants [131]

Answer:

a. ammonia, blood, milk, orange juice

b. orange juice, milk, blood, ammonia

c. ammonia, milk, blood, orange juice

d. orange juice, blood, milk, ammonia

Explanation:

PLEASE MARK ME AS BRAINLIEST!!!!

8 0
3 years ago
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