1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anit [1.1K]
3 years ago
12

When and how does the amount of DNA (c-content; where c

Biology
1 answer:
Savatey [412]3 years ago
6 0

Answer:

G1 phase: 2C

S phase: 4C

G2 phase: 4C

Meiosis-I: 2C and Meiosis-II: C

Mitosis: 2C

Explanation:

Let's suppose that a cell with 2C DNA content enters the cell cycle. As the G1 cell with 2C content would enter the S phase, DNA replication would double the amount of DNA. Therefore, the cell by the end of the S phase and in the G2 phase would have 4C DNA.

If the G2 cell with 4C DNA enters meiosis-I, separation of homologous chromosomes to the opposite poles in anaphase-I would reduce the DNA content to 2C. Therefore, the cell by the end of anaphase-I would have 2C content. Meiosis-II would further reduce the DNA content in anaphase-II by separation of sister chromatids to opposite poles. Therefore, each of the four daughter cells formed by the end of meiosis would have C DNA content.

If the G2 cell with 4C DNA enters mitosis, separation of sister chromatids to opposite poles in anaphase would reduce the DNA content. Therefore, each of the two daughter cells formed by the end of mitosis would have 2C DNA content.

You might be interested in
State one way the sciencists have been able to manipulate the algaes process to be more strontuim selective
BabaBlast [244]

Answer:

Scientists discovered that the process begins when the green algae first absorb strontium, calcium and barium from water. The strontium and barium form crystals inside of each algae cell. The crystals remain inside the cells, but the algae filters out and excretes calcium and other minerals that may be present. The strontium is then isolated, and thus able to be treated.

7 0
3 years ago
What is the length of a 0.2-mm object expressed in je m?
adelina 88 [10]

Answer:

200.000 in je m

Explanation:

1 je m is equal to 1000 mm.

Therefore 0.2 mmm will be equal to 1000 × 0.2 mmm

This will give us 200 je m.

8 0
2 years ago
The _____ works with the Environmental Protection Agency to enforce marine biology regulations along the coast and in the Great
likoan [24]

The <u>Coast Guard</u> works with the Environmental Protection Agency to enforce marine biology regulations along the coast and in the Great Lakes channels.

Answer: Option A

<u>Explanation:</u>

The Environmental Protection Agency (EPA) takes initiative to instill certain regulations to maintain the Ocean and its resources with the help of coastal guards and NGO’s. The Ocean coast is polluted due to various avoidable and unavoidable pollutants like oil leakage, industries letting in their waste, ship wrecks etc.

President Richard Nixon was the one who created this EPA. The EPA takes utmost care by educating the people of the necessity to maintain the coast in a disciplined attitude so as to have a pollution free oceanic coast which would in turn not adhere into the relevant working stream. Avoiding litter is the main rule that has been imposed.

5 0
3 years ago
Read 2 more answers
F an adult dog has 78 chromosomes, the number of chromosomes in a dog’s sperm cell will be
telo118 [61]
There's 39 chromosomes in the sperm cell. Why? Because sperm cells are gametes and therefore they are haploid cells meaning they have half the number of chromosomes of a regular cell or diploid cell.

78 / 2 = 39
6 0
3 years ago
SC4: I can explain how the following are
Evgesh-ka [11]

Answer:

I think how species are related is because of their blood and how they are alike from other breeds

Explanation:

7 0
2 years ago
Other questions:
  • Silas is a man who is in his late seventies. he has a condition characterized by hypertension, obesity, and insulin resistance.
    6·2 answers
  • _____ - describes the amount of matter in an object
    10·1 answer
  • What has occurred when a chromosome breaks and a piece is lost?
    8·1 answer
  • In which cells dose meiosis occur?
    11·2 answers
  • Help me plzzzz. I’m not sure
    6·2 answers
  • 1. A black (Cch) is crossed with a chinchilla bunny (cch cch).
    9·1 answer
  • N the classification of organisms, which is the correct order of ranks?
    12·1 answer
  • Why is crossing-over important?
    7·2 answers
  • Problems With Overgrazing
    5·1 answer
  • How is an oxbow lake formed? a. An oxbow lake is formed when a lake shrinks due to erosion. B. An oxbow lake is formed when the
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!