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musickatia [10]
3 years ago
5

A particular cell type spends 4 hours in G1 phase, 2 hours in S phase, 2 hours in G2 phase, and 30 minutes in M phase. If a puls

e-chase experiment was performed with radioactive thymidine on an asynchronous culture of such cells, what percentage of mitotic cells would be radiolabeled 9 hours after the pulse
Biology
1 answer:
V125BC [204]3 years ago
4 0

Answer:

<h2>0%.</h2>

Explanation:

1. As given, cell cycle is of 8.30 hours.

G1 phase= 4 hours;

S phase= 2 hours;

G2 phase = 2 hours;

M phase= 30 minutes.

2. Adding up each phase shows that the cell cycle is 8.5 hours long. As after 9 hours, the radio labeled cells would have passed through a full cycle ( from G-1 to m phase) and be in either S phase or G2- phase and  none cell  would have entered M Phase.

3. DNA  synthesis occurs only in S-phase, so the incorporation of any radioactive nucleotide happens in S-phase only.

4. M phase, cell divide itself into two daughter cells.

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Which of Mars's moons is most likely to either break apart or crash into the planet in
algol [13]

Answer:

Phobos

Phobos is nearing Mars at a rate of six feet (1.8 meters) every hundred years; at that rate, it will either crash into Mars in 50 million years or break up into a ring.

Explanation:

5 0
3 years ago
How many types of organisms are there on Earth?
tankabanditka [31]
There is well over a million types of organisms on Earth.
3 0
3 years ago
Red foxes have three different types of coat color: red, cross, and black/silver. These coat colors are controlled by a single l
Anna [14]

Answer:

74%

Explanation:

The frequency in such cases (diallelic cases) is estimated by following formula which is attached in the image:

So as per our question, the frequency of the "R allele" as per data given below will be as under:

58 red-phase (RR)

32 cross-phase (RS)

10 black/silver-phase (SS) foxes

Total plants = 58 + 32 + 10 = 100

f(R) = 58 x 2 + 32/ 2 (58+32+10)

    = 116 + 32 / 200

     = 148/200

     = 0.74 i.e. 74%

3 0
4 years ago
The questions are in the pic, they are about gravity :)
AveGali [126]

2. Because the gravitational force from anything that small compared to a planet is so minuscule it's nearly impossible to feel or measure.

3. Because do not have life and other processes necessary to create the gasses and substances necessary to create an atmosphere.

4. If the amount of mass lost was large enough it would likely allow the moon to eventually orbit away

8 0
3 years ago
Why is it a good idea to plant only native species in your garden
Brums [2.3K]

Answer:

Native plants do not require fertilizers and require fewer pesticides than lawns. Native plants require less water than lawns and help prevent erosion. The deep root systems of many native Midwestern plants increase the soil's capacity to store water.

Explanation:

plato

6 0
2 years ago
Read 2 more answers
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