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Yuri [45]
3 years ago
7

if a mutation appears in one individual that changes one base in a dna sequence to another base in a DNA sequence ot another bas

e, and the population is evolving by genetic drift, over time that mutation will
Biology
1 answer:
irakobra [83]3 years ago
8 0

Answer:

The mutation will be fixed by genetic drift.

Explanation:

Genetic drift is the change in the allele frequencies in a population that occur randomly. It is an evolutionary process (like natural selection), that is associated with the reduction in genetic diversity by the fixation of rare allelic variants and neutral mutations. In this example, this point mutation is neutral since, according to data, the population is evolving by genetic drift. Moreover, it is also important to note that a mutation that involves one nucleotide is also called Single Nucleotide Polymorphism (SNP).

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a sample of human cells is suspended in a nutrient solution overnight. The next dasy, the scientist observes that the cells have
TEA [102]

The question is incomplete as it misses the options which are:

Cancer cells do not exhibit density dependent inhibition

Cancer cells do not require growth factors

Cancer cells do not exhibit anchorage dependence

Cancer cells ignore typical cell cycle checkpoints

Answer:

The correct answer will be option- Cancer cells do not exhibit anchorage dependence

Explanation:

A cell becomes tumour forming cell or cancerous cell when the cell undergoes some mutation in the DNA which causes uncontrolled cell division without differentiation.

As a result of the mutation, these cancerous cells show various properties which are present in the normal cells nut absent in cancerous cells like the cancerous cells lack the anchorage dependence.

Anchorage dependence is the property of the cells or the group of cells in which the cells maintain their adherence to the other layer of cells to communicate with each other.

Thus, the cancerous cells lack the anchorage dependence

6 0
3 years ago
Mention any two similarities between simple perment and complex permanent tissue
enyata [817]

Both types of tissues are made of differentiated cells that have a specific function.

Both types of tissues contain cells that lost the ability to divide

4 0
3 years ago
Now we need to prepare a buffer that has a pH of 7.4. We need this specific pH to
Anestetic [448]

Answer:

b) By mixing weak base with its conjugate acid and then adjusting the pH with strong  acid.

Explanation:

Hello,

In this case, considering that the buffer required a pH greater than 7 where the basic conditions are present, we need a weak base and its conjugate base in order to assure such pH greater than 7. Moreover, by using a strong acid, we can gently add it in order to decrease the pH up to 7.4 via a properly measured neutralization of the necessary moles of base up to a hydrogen concentration of 3.98x10⁻⁸ (pH). Therefore, answer is b) By mixing weak base with its conjugate acid and then adjusting the pH with strong  acid.

Best regards.

8 0
3 years ago
Tectonic plates can affect __________________ environmental changes, which might be a cause for species extinction
laila [671]

Answer:

I believe it is long term.

Explanation:

did it in edge 2020

3 0
3 years ago
During strenuous exercise, Max's body produces lactic acid and his blood pH begins to decline. His kidneys go to work to preserv
Marat540 [252]

Answer:

c. reabsorbing hydrogen

Explanation:

In this scenario, the individual's kidneys will do all of the following except for reabsorbing hyrdogen. This is because, in a scenario like this where the body pH levels decline the kidneys begin to secrete hydrogen, they do not reabsorb it. It is this process of acid elimination that ultimately causes the body's pH levels to begin rising and restoring themselves to normal. Therefore the answer to this question is c.

8 0
3 years ago
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