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Margarita [4]
3 years ago
8

PLEASE HELP!!!!!! WILL GIVE BRAINLIEST!!!!!!!

Biology
2 answers:
Basile [38]3 years ago
6 0

Answer:

''Stem cells makes copies of itself whereas differentiated cells can't.''

Explanation:

stem cells function differently from differentiated cells because the stem cells divide and make copies of itself. It has the potential either to remain a stem cell or become another type of cell such as a muscle cell, a red blood cell, or a brain cell if the body needed while on the other hand, differentiated cells are specialized cells which performs specific functions and unable to divide.

Tresset [83]3 years ago
5 0

Answer:

Stem cells are unspecialized cells that can make copies of themselves without limits when needed whereas differentiated cells can't, instead they become specialized as their body develops.

Explanation:

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3 years ago
Choose the true statement(s) about mutations. To be marked correct, you'll need to select all true statements, as there may be m
Kazeer [188]

Answer

All four options ( A,B,C,D ) are true about mutations.

Explanation:

A-  <u>Mutation can provide an evolutionary benefits</u>

As mutation helps in creating DNA  sequence ,new allele(variant of gene) for a specific gene , thus mutations is known to be the first step of evolution.

B-<u> Mutation leads to genetic and phenotypic variation within the species. </u>

In mutation, genetic  variation (difference between individual/population) takes place as new alleles are created ,random matings ,fertilization and during meiosis , recombination of homologous chromosomes. One of the type of mutation called gene mutation give rise to genetic variations.

Its an exceptional case of phenotypic variations ,as mostly there is no effect of mutation on phenotypic variation. Very few mutations lead to phenotype variation and in case mutation takes place in phenotype variation ,making the organism well suited to the environment, the a rapid change  in the characterstics of the individual species is seen.

C- <u>In humans, the somatic cell mutation are not passed in offsprings. </u>

Somatic cells are present in all over the body except in the cells that give rise to gametes( ie. egg and sperm cells) and produces offsprings . Thus somatic cells are absent in gametic cells ,therefore mutation cannot be passed to human's offsprings or children.

D- <u>Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.  </u>

Due to their fast  growth ,bacteria evolve quickly and share genes with each other and even between the species ,also the mutation that are helpful spread faster in bacteria.  

In humans, the silent mutation in human cells cause many genetic disorders like Laron dwarfism.  About 99.8% genes are silent mutation.

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cestrela7 [59]
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Vesnalui [34]

Answer:

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Explanation:

3 0
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