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
Neko [114]
3 years ago
9

Polytene chromosomes of Drosophila salivary glands each consist of multiple identical DNA strands that are aligned in parallel s

tructures. How could these arise?
Biology
1 answer:
rewona [7]3 years ago
5 0

Answer:

Polytene chromosomes may be defined as the giant chromosomes that contain alternate dark and light bands when view under the microscope. These chromosomes are found in the salivary gland of Drosophila.  

These glands are functionally highly active and contain thousand of DNA strands. These chromosomes are aligned parallel with each other as the replication is normal but the cells are unable to separate and fails to undergo the process of cytokinesis.

You might be interested in
. Which plane divides the body into upper and lower parts?
LekaFEV [45]
Coronal according to quizlet

5 0
2 years ago
What is the relationship between mutation, the cell cycle, and cancer? Select all statements that apply.
OverLord2011 [107]
Cancer is a mutation of multiple cells through the cell cycle. cancer doesn’t only effect one cell, but effects many
5 0
3 years ago
What are all the steps of the water cycle​
Readme [11.4K]

Answer:

Brainliest please!

1. Evaporation -  During this process, surface water turns into water vapor. This is done by the transfer of heat energy. Water absorbs this heat energy and turns into its gaseous state.

2. Condensation -   Water vapor rises into the atmosphere and is changed into water droplets. When gas is chilled, it turns back into a solid state. These water particles that form in the atmosphere then come together to form clouds.

3. Sublimation - Ice directly converts into water vapor without first converting into a liquid. This process accelerates when the temperature is low or pressure is high.

4. Precipitation - It is the result of evaporation and condensation. Precipitation describes any liquid or solid water that falls to Earth as a result of those two processes. It includes rain, hail, snow, sleet and a bunch more.

5. Transpiration - When precipitation happens, the soil absorbs some of the water. While in the soil, the roots of plants will take in the water and push it towards the leaves where it is used for photosynthesis.

6. Run Off -  This happens as a result of precipitation, so it is again, technically not a process. As water pours down, it leads to runoff. This is the action of water running over the surface of the Earth.  As water runs over the ground, it can displace the topsoil with it and move minerals along lakes, seas and oceans.

7. Infiltration - This last process happens when water does none of the things stated above after precipitation. Sometimes, some of the water will move deep into the soil. Avoid the plants, avoid evaporation, avoid runoff, everything. The water instead seeps down and increased the level of the groundwater table. It is called pure water and is 100% fresh and drinkable.

3 0
2 years ago
What is a niche? *
Ratling [72]

Answer:

A. The habitat that an organism lives in

D. All of the above

Good luck on the test ;)

5 0
2 years ago
A scientist is working with methane (CH4) and butane (C4H10). Which statement best compares these chemicals? 1. They are two dif
Roman55 [17]
2 they are to different numbers
6 0
2 years ago
Other questions:
  • It is unimportant to take the weather into account when you are planning water activities.
    10·2 answers
  • Which cells possess a nucleus l? What is the purpose of a nucleus and DNA found within it?
    12·1 answer
  • Which is more likely to be the cause of down syndrome the egg or the sperm
    13·2 answers
  • Explain the benefits of animals working together in groups.
    8·1 answer
  • If you collect 62 ml of gravitational water in a graduated cylinder and you started with 100 ml of water that you poured through
    8·1 answer
  • What are the reactants and products in aerobic respiration?
    14·1 answer
  • N
    14·1 answer
  • DNA makes us all unique by controlling the production of _______that make us look different and have the structures to better su
    10·2 answers
  • List and briefly describe the three main cell cycle checkpoints.
    10·1 answer
  • In Texas, paddlefish are
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!