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DochEvi [55]
1 year ago
5

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why? A.

the genes expressed in in skin cells may not be expressed in nerve cells and vise versa
B. the genes in skin cells are transcribed but not translated as genes of nerve cells
C. the DNA in nerve cells undergoes mutations making them different from DNA in skin cells.
Biology
2 answers:
meriva1 year ago
7 0
I think the correct answer from the choices listed above is option A. Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA because the genes expressed in inskin cells may not be expressed in nerve cells and vise versa.
Ugo [173]1 year ago
3 0

Answer:

The correct answer is A. the genes expressed in skin cells may not be expressed in nerve cells and vise versa.

Explanation:

Every cell in the body contains the same set of genes in their chromosomes but only some fraction of its gene expresses which allows the different cells to appear and function differently in their environment.

Therefore every cell makes different proteins according to the job that cell performs like in RBC genes are expressed to synthesize the hemoglobin proteins but other cells do not produce this protein because genes for hemoglobin is not expressed in them.

Therefore the right answer is A. the genes expressed in skin cells may not be expressed in nerve cells and vise Versa.

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Label each organism in the food web as a producer, consumer, or decomposer. Hope u can help.
ira [324]

Hi, The center image is a decomposer because it decomposes the dead organisms. The grass is a producer since it produces its own energy through photosynthesis. The rest are consumers because they consume other organisms to get energy. Hope that helped!

6 0
2 years ago
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A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the n
katrin [286]

Answer:

The correct answer is: the group of 10 people that lifted the barbell with music is the control group.

Explanation:

The personal trainer made an experiment to test her hypothesis. When experiments are being made, is common to have a control group and an experimental group.

The control group is the one that is subjected to the usual conditions, the group that shows what normally happens. The experimental group is the opposite, this group is observed while it goes through an unusual condition that may impact how they perform in the task observed.

<u>The personal trainer thinks that playing music for her clients is of benefit to them, so we can assume that she always plays music during the workouts, which means that the control group is the one that is listening to music while lifting a barbell</u>. The group that worked out without music is the experimental group because they were the ones that performed that activity with a change in their normal environment.

7 0
1 year ago
If two orange heliodors have a child, what is the probability their child would be red?
Stels [109]

Answer:

25% or 1/4

Explanation:

The gene for colour in Heliodors is controlled by two contrasting alleles that codes for Red (R) and Yellow (Y) colours. However, these two alleles exhibit incomplete dominance, which is a phenomenon whereby a combination of both alleles gives rise to a third intermediate phenotype that is a blending of the other two parental phenotypes. In this case, both colours gives rise to a heterozygous Orange coloration (RY) in Heliodors.

However, if two orange Heliodors (RY) are crossed, four possible offsprings will be produced with the genotypes: RR, RY, RY, YY. This shows a phenotypic ratio of 1 red: 2orange: 1yellow. Hence, the probability of having a child with red coloration is 1 out of 4 possible offsprings i.e. 1/4.

Expressing this in percentage, we have 1/4 × 100 = 25%.

8 0
2 years ago
This is the comparison of amino acid sequences in proteins. A close match of the amino acid sequences in comparable proteins in
densk [106]

Answer:

True to some extent...

Explanation:

We can use bio-informatical tools like MEGA to see that to what extent an amino acid sequence shares ancestry with the other one. But these tools are based on statistical methods and mathematical modelling that make them unreliable as compared to the real world observations.

7 0
1 year ago
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The fact that plants can be cloned from somatic cells demonstrates that _____.A) differentiated cells retain all the genes of th
mojhsa [17]

Answer:

The correct answer is A) differentiated cells retain all the genes of the zygote

Explanation:

A plant can be cloned from the somatic cells which shows that the differentiated cell of plants have the ability to divide and differentiate to produce a new plant. This property of the cell is called totipotency.

All the cells in plants are not totipotent but some cells under proper condition can show the property of totipotency. Totipotency property shows that the differentiated cell is having all the genes that were present in the zygote.

This property of plant cells is used by scientist in plant tissue culture to produce plants for research and other purposes. So the right answer is A.

8 0
2 years ago
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