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
uranmaximum [27]
3 years ago
6

Crossing over occurs when

Biology
2 answers:
Zanzabum3 years ago
5 0

The correct answer to this question is B:  homologous chromosomes join together to form tetrads during prophase I.

balandron [24]3 years ago
3 0
During meiosis 1, prophase 1 Each chromosome  form tetrads and  and become more and more condensed. This is when crossing over occurs. So your answer is B. 
You might be interested in
The head of a giraffe is 2.0 m above its heart and the density of the blood is 1.05 103 kg/m3. what is the difference in pressur
erastovalidia [21]
The giraffe head is higher than its heart so the blood pressure in the head must be lower than in the heart. The pressure is directly related to the density, gravity, and the height. The calculation would be:

<span>P = ρ*g*h 
</span>P= 1.05* 10^3 kg/m3 * 9.8m/s2 * 2m= <span>20 580 pascals= 20.58 kpa</span>
8 0
3 years ago
PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!!
erica [24]

Answer:

b

Explanation:

the element is named after the latin word for calcium 'calx'

5 0
2 years ago
What happens when the supply of energy-rich molecules in a muscle is used up?
mr Goodwill [35]
<span>The supply of energy-rich molecules in muscles are used up, then the muscles become tired, and they need to rest.

 Lactic acid is being produced from anaerobic respiration. If compared to cellular respiration, fermentation does not produce much energy.</span>
4 0
3 years ago
Read 2 more answers
Windup, if it occurs, is seen in animals
Olenka [21]

Answer: Option D.

After recovery from general anesthesia.

Explanation:

Wind up in animals is a situation whereby there is increase in pain on the affected area due to high stimulus that is given above the normal level. These is caused by continuous stimulation of group c peripheral nerve fibres of the nervous system.

Wind up occur in animals after recovery from general anesthesia because the peripheral nerve fibres are continuously stimulated to cause windup.

5 0
3 years ago
Describe the path of light as it travels from the flashlight to the air.
Fantom [35]

Answer:

the answer is 'rectilinear propogation of light'

Explanation:

5 0
3 years ago
Other questions:
  • If the concentration of phosphate in the cytosol is 2.0 mM and the concentration of phosphate in the surrounding fluid is 0.1 mM
    5·1 answer
  • Which is one of the six fundmental elements that are found in living organisms ​
    10·1 answer
  • Why is ATP used as an active energy source over glucose? A. It is more abundant in food sources. B. It releases its energy quick
    13·1 answer
  • One way to tell that an explanation is pseudoscientific rather than scientific is to
    5·2 answers
  • The _____ is the bacterial structure that acts as a selective barrier, allowing nutrients to enter the cell and wastes to leave
    8·2 answers
  • Why is there more nitrogen than oxygen in the air?
    11·1 answer
  • Can genetic material in a plant cell be found in ribosome
    13·2 answers
  • Scientists agree that changes in atmospheric gases may what?
    14·2 answers
  • How can a change in DNA alter the physical traits of their offspring?
    9·1 answer
  • Select the correct statement about current hypotheses for the cause of the Cambrian explosion.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!