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2 years ago

Stem cells found in adult tissue, such as in the bone marrow, brain, muscle, skin, and liver, are only capable of .

Biology

2 answers:

Shkiper50 [21]2 years ago

6 0

The correct answer to this open question is the following.

<em>Stem cells found in adult tissue, such as in the bone marrow, brain, muscle, skin, and liver, are only capable of</em> self-renewal.

Stem cells in adults have the possibility of self-renewal and multipotency. Cells in the body can renovate themselves many times and also can differentiate in different types. Stem cells also have the ability to repair damaged tissues.

BigorU [14]2 years ago

5 0

They are capable of renewing and dividing (multiplying) themselves for long periods of time, they are unspecialized, and they can give rise to other specialized cell types. Hope this helps!! :)

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During DNA replication, the leading strand is synthesized continuously, whereas the lagging strand is synthesized as Okazaki fra

Leokris [45]

Answer:

Because DNA polymerase can synthesize DNA strands in 5' to 3' direction only.

Explanation:

The 5' end of one DNA strand is present opposite to the 3' end of the other strand. But DNA polymerase enzyme can elongate the primers in 5' to 3' direction only. Formation of a phosphodiester bond between the existing nucleotide and the incoming nucleotide requires the free 3'OH. This 3' OH serves in the nucleophilic attack during the formation of the bond.

Therefore, the lagging strand is synthesized discontinuously in the form of short DNA fragments. These are called Okazaki fragments. Primers are formed for short distances which in turn are elongated by DNA polymerase to form the Okazaki fragments. On the other hand, the synthesis of the leading strand occurs continuously in the same direction in which the replication fork moves.

5 0

2 years ago

A thin flexible semipermeable barrier around the cell which regulates what enters and leaves the cell

AnnyKZ [126]

That is the cell membrane. Think of it as a gate around a city, that is how I remember it. The city is the cell, and the cell membrane is the gate that "protects" the city, and controls what can enter and exit.

8 0

2 years ago

Read 2 more answers

A checkered hen mates with a checkered rooster. The genes for the checkered trait are codominant in both parents. What are the c

seropon [69]

Answer:

Option D, 75%

Explanation:

Let the genotype of co dominant checkered hen mates and checkered rooster be CcC and CcC

Where Cc – is the allele for chekered skin

C – is the allele for non chekered skin

Co-dominant allele are those which irrespective of being dominant or recessive are expressed equally.

The punnet square for the cross between these two would be

Cc C

Cc CcCc CcC

C CCc CC

3 out of 4 offsprings have chekered allele i.e CcCc, CcC and CcC. Thus, the probability of chekered offsprings would be 75%

6 0

2 years ago

Read 2 more answers

A land-dwelling organism, A, and an aquatic single-celled organism, B, are represented below.

Sergio039 [100]

Using the image that represents the land-dwelling organism and an aquatic single celled organism. The statement that best explains how A and B are able to survive in their environments is…

Answer: A) The organelles in B perform similar functions to the organ systems in A.

Please see image attached to better understand how we arrived to the conclusion.

<span>I hope it helps, Regards. </span>

8 0

2 years ago

. Pepper colors range from bright red, orange, and yellow shades, to dark green and brown shades. Coloration in bell peppers is

sattari [20]

Answer:

All crosses and proportions, genotypes and phenotypes are attached.

Explanation:

a. Within living organisms, staining is a characteristic governed by a polygenic inheritance, which means that there is more than one gene involved in the staining process. as you already know, each gene has two alleles, if a trait is controlled by 2 genes, it means that we will have 4 alleles at the crosses.

From the description between dominance and recessivity between the alleles that control the colors of the pepper, shown in the question above, we can see that for the crossing between a red pepper and a green pepper, being able to generate a completely orange offspring, it would be necessary that the genotype of the parent peppers was: Red: RGRG, green: rgrg.

This would generate an orange-colored RrGg offspring, as you can see at the F1 crossing.

b. When individuals of F1 offspring are crossed, the combination of alleles and the determination of genotypes and phenotypes becomes much more complex, because instead of 4 alleles, we will have the combination of 16 alleles among themselves. Once again we will need to rely on the description of dominance and recessivity shown in the question above, so that from the crossing between the alleles of each gene, we can reach a conclusion, as you can see in the F2 crossing.

4 0

2 years ago