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
Darina [25.2K]
4 years ago
5

How do G1 and G2 of the cell cycle for blastomeres in cleavage differ from G1 and G2 of the cell cycle in growing adult cells, s

uch as skin, liver, blood, and bone cells?
Biology
2 answers:
stepladder [879]4 years ago
7 0

Answer:

In blastomeres cleavage, the G1 and G2 phase are absent while in adult cells have G1 and G2 phase. The other difference is the short duration of S phase in the blastomeres as compared to somatic cells.

Explanation:

Skin, liver, blood, and bone cells are somatic cells in which mitosis type of cell division occurs. In mitosis, G1 and G2 phase are present while in blastomeres G1 and G2 phase are absent. Blastomeres refers to the division of the cell in the early stages of embyo so they lack G1 and G2 phase and little time for S phase.

zlopas [31]4 years ago
7 0

Answer:

The cell cycle of blastomeres in cleavage does not occur with the duplication of organelles and cytoplasmic components, for this reason it does not present the G1 and G2 phases. The cycle of mature cells needs duplication of the components and cytoplasmic organelles and for this reason, they present phases G1 and G2.

Explanation:

The cleavage of blastometers is one of the stages responsible for embryonic development. It occurs after fertilization. At that time, the male gamete is joined to the male gamete forming a zygote. This zygote is taken to the uterus where it will undergo numerous cleavages, which are mitotic divisions, which occur without the cell changing in size. These divisions form the blastomeres that go a long time without dividing. Those cell divisions that do not show a change in cell size do not have stages G1 and G2 of the cell cycle.

On the other hand, the cell division of mature cells presents the G1 and G2 phases during their cycle. The G1 phase is characterized by the increase in cell size, which occurs because of the duplication of cellular components that are in the cytoplasm, before cell division. The G2 phase, in turn, is also characterized by an increase in cell size, but this time, this difference in size occurs by the duplication of cytoplasmic organelles.

You might be interested in
What is the relationship between Distance and average number of species?
valkas [14]

Answer: The relationship between species and distance is that more distance or space has more species and less space has less species.

Explanation:

It can easily be understood by taking the example of the island in such a way that the larger islands contains more species than smaller islands.

There are a  diversity of species seen in a bigger islands, more in number and more in variety.

It is very important for the studying the various species and its conservation, protection and other factors.

So, more is the distance , more will be the number of species.

6 0
3 years ago
Mushrooms are: ascomycetes basidiomycetes chytridiomycetes zygomycetes
alekssr [168]
Mushrooms are Basidiomycetes
7 0
3 years ago
Normalization refers to providing opportunities for individuals with disabilities to go to school and participate in education e
zzz [600]

Answer:

Answer is true.

Explanation:

Generally, it has been discovered , that people with disabilities are deprived of their rights to many national or international benefits. This is because , they do not have the abilities to strive or contend physically with able people. And this has made them to settle for anything that is being given to them.

The process of normalization has really helped to put things back to how it should be, and this has really helped the people with disabilities because, they now have access to facilities or things that able people have access to, even without struggling or contending with them. Because, prefrential treatments has been given to them wherever or whenever they have to share amenities with the able people.

4 0
3 years ago
Which pair of terms best describes a wooden table?
Ostrovityanka [42]

Answer:

Biotic and non-living

Explanation:

=> Since it can't move,respire, ingest or reproduce , it is a non-living thing.

=> It is a component derived from the living part of an ecosystem(A wooden tree), so it is a biotic component.

6 0
3 years ago
Read 2 more answers
The oldest fossils of anatomically modern humans at Herto date from a. between 154,000 and 160,000 years ago b. between 300,000
Alinara [238K]

Answer: Option A

Explanation:

Homosapiens also known as Herto Man. It is the name given to the number of the early modern human fossil which was found in the 1977 which was dated to be around 160,000 years ago.

Palaeoanthropologists determines the skeletal that was found belongs to the extinct species of homo sapiens that once lived in Pleistocene Africa.

The skeletal was dated using the potassium dating which helped to known the age of the fossil.

3 0
4 years ago
Read 2 more answers
Other questions:
  • I have a test about metabolism can someone please explain the subject well? Like just give me a explanation of how it works, and
    13·2 answers
  • The cell theory has three main components. Which three scientists’ conclusions formed these components?
    14·2 answers
  • PLS HELP ME AND PLS DON'T SKIP!!!
    9·2 answers
  • Dogs have a reduced nonfunctional digit on their paws known as a dewclaw. What is this an example of?
    8·2 answers
  • Only producers/autotrophs
    10·1 answer
  • based on the picture above, what do you think have this muscle it’s reddish color? (the picture is raw steak)
    5·2 answers
  • 9. ¿Para que el ADN se enrolla en proteínas en los cromosomas?​
    12·1 answer
  • 1. (2 points) If the number of pythons increases then the death rate of marsh rabbits will
    5·1 answer
  • Why do we close our eyes when exposed to bright light?
    9·1 answer
  • What does the 5 layer model of the earth show?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!