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
frosja888 [35]
3 years ago
9

Compare and contrast Prophase and Telophase. what is different about DNA of the chromosomes in these phases. ( Max 5 Sentences )

Biology
1 answer:
shepuryov [24]3 years ago
4 0

Answer:

The C. elegans embryo is a powerful model system for studying the mechanics of metazoan cell division. Its primary advantage is that the architecture of the syncytial gonad makes it possible to use RNAi to generate oocytes whose cytoplasm is reproducibly (typically >95%) depleted of targeted essential gene products via a process that does not depend exclusively on intrinsic protein turnover. The depleted oocytes can then be analyzed as they attempt their first mitotic division following fertilization. Here we outline the characteristics that contribute to the usefulness of the C. elegans embryo for cell division studies. We provide a timeline for the first embryonic mitosis and highlight some of its key features. We also summarize some of the recent discoveries made using this system, particularly in the areas of nuclear envelope assembly/ dissassembly, centrosome dynamics, formation of the mitotic spindle, kinetochore assembly, chromosome segregation, and cytokinesis.

1. The C. elegans embryo as a system to study cell division

The C. elegans embryo is a powerful model system for studying the mechanics of metazoan cell division. Its primary advantage is that the syncytial gonad makes it possible to use RNA interference (RNAi) to generate oocytes whose cytoplasm is reproducibly (>95%) depleted of targeted essential gene products. Introduction of dsRNA rapidly catalyzes the destruction of the corresponding mRNA in many different systems. However, depletion of pre-existing protein is generally a slow process that depends on the half-life of the targeted protein. In contrast, in the C. elegans gonad, the protein present when the dsRNA is introduced is depleted by the continual packaging of maternal cytoplasm into oocytes (Figure 1). Since depletion relies on the rate of embryo production instead of protein half-life, the kinetics tend to be similar for different targets. By 36-48 hours after introduction of the dsRNA, newly formed oocytes are typically >95% depleted of the target protein.

Explanation:

You might be interested in
Why are marshmellows scientificlly the best tasting thing ever?
yKpoI14uk [10]
Marshmallows are probably so delicious because of several important factors. They are fluffy, soft, and oh-so sweet. They melt in your mouth and taste absolutely heavenly with chocolate and graham crackers. Or throw a couple in your hot chocolate. There's no wrong way to eat them and they're pretty cheap too.
6 0
3 years ago
Read 2 more answers
A human body cell has 46 chromosomes which diagram Represents Mitosis in a human body cell
Scrat [10]

Answer:

The diagram which shows the formation of two daughter cells is mitosis.

A human body cell has 46 chromosomes when mitosis in a human body cell occurs, the parent cell divides into two daughter cells which has the exact number of chromosome i. e. 46 in each daughter cell. When replication of chromosome occurs, two identical copies of chromosomes are formed.

5 0
3 years ago
A grouping of stars that resembles a picture
Scrat [10]
The answer is constellation.
6 0
2 years ago
Read 2 more answers
If the outside temperature decreases by 20 degrees Celsius, what will happen to a reptile’s body temperature?
oksian1 [2.3K]

The reptile's body temperature rises when the external temperature rises. When the temperature drops, so does his body temperature. If a reptile feels cold because the external temperatures have made his blood cold, he'll lie in the sun to warm up. However, if the external temperature is too high, he scurries under a rock, dives in a pool or finds some kind of shade where he can cool down. Reptiles and other animals with ectothermic systems are vulnerable to extreme changes in temperature because they can't control their temperatures internally. They can control their body temperatures only by moving to an environment with a suitable ambient temperature.

6 0
3 years ago
What is the intertidal zone?
Whitepunk [10]

Answer:

The answer here is B.

Hope this helps!!

8 0
3 years ago
Other questions:
  • How do organ systems work together to deliever nutrients from food throughout the body?​
    14·1 answer
  • What vascular plant tissue is made of dead cells?
    8·1 answer
  • What are the 6 types of fossils
    13·1 answer
  • In which main regions of the kidney are the collecting ducts and the loop of henle located
    12·1 answer
  • How do homologous structures develop
    5·1 answer
  • 17. A terrane becomes part of a continent in a process called
    7·1 answer
  • Please help this question got me confused.
    12·1 answer
  • What question can a biologists ask to determine if an object is a living thing?
    15·1 answer
  • What are the characteristics of normal cells and cancerous cells?​
    14·1 answer
  • The mass of the products of a chemical reaction __ the mass of the reactants
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!