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
spayn [35]
3 years ago
13

What are the chromosomes called when they look like Xs​

Biology
1 answer:
Marina86 [1]3 years ago
6 0

Answer:

I think you're referring to the Metaphase...

Explanation:

During Cell Division (or, rather before!) the DNA needs to be replicated. This normally is done by DNA Polymerase, and results in two identical double strands (the "Sister Chromatids".

These chromatids are held together at the Centromere, which will be the heart of the "X"-shape. After that the DNA is packed into Chromosomes by winding it around proteins called Histones. If I remember correctly there are 5 different Histones.

This "Zipping Up" makes the chromosomes more visible.

As the two sister chromatids are still connected, the result is the X-shaped Metaphase Chromosome....

You might be interested in
Evidence from biology indicates that maximum life span is genetically determined and thus fixed for each species. true or false
weeeeeb [17]
This question would be given a false answer Dear
3 0
3 years ago
PLZ Subscribe to Toca life shines to the moon
Stolb23 [73]

Explanation:

y would you say this on brainly

4 0
3 years ago
Read 2 more answers
Greg Developed and Ear infection. His doctor gave him an antibiotic. The antibiotic killed all the bacteria in his body. What ot
Sati [7]
Antibiotics can have side effects.
When children take antibiotics at the first sign of an ear infection, they are more likely to have vomiting, diarrhea, and allergic reactions because of the medicine. Also, antibiotics can kill “friendly” germs in the body and cause other problems like diarrhea.

Over-use of antibiotics is a problem.
Antibiotics can help drug-resistant bacteria grow. These bacteria are harder to kill. They can cause illnesses that are harder to cure and more costly to treat. This increases the risk of complications and side effects. The resistant bacteria can also infect other people.

Hope this helps
8 0
3 years ago
The decision to visit planets other than Earth is not supported by everyone. What would be a good argument against sending human
Ann [662]

Answer:

Sending humans to other planets may cause danger. We dont fully know what these planets are capable of doing. If there is such a thing as life on other planets then we still dont know weather or not life there is friendly or not. They could be harmful, because just as we dont know know exactly who or what they are, they dont know who or what they are either, so its a high chance they may want to defend themselves.

Explanation:

8 0
3 years ago
In tomatoes, tall (D) is dominant over dwarf (d) and smooth fruit (P) is dominant over pubescent fruit (p), which is covered wit
maksim [4K]

Answer:

a) Both DdPp

b) Yes 3.8%

c) In plant A, the dominant allele D and P are coupled (DP, dp), In plant B they are in repulsion (Dp, dP).

7 0
3 years ago
Other questions:
  • BRAINLEST
    5·2 answers
  • If you ate a samples of the different carbohydrates seen here, how would the available energy differ from each source and why?
    10·1 answer
  • Producers found in the polar ice region
    8·1 answer
  • In a population of owl monkeys, allele T codes for tufted tails ( TT and Tt). The
    8·1 answer
  • Coin tosses can demonstrate the effects of genetic drift. Imagine that heads and tails are two alleles in a population. Consider
    9·1 answer
  • Where can you find carbon​
    10·2 answers
  • What part of a cell prevents water from entering the cell?
    13·1 answer
  • An organism's _______ describes its genetic composition. An organism's _______ describes its appearance or observable characteri
    15·1 answer
  • What is the farming method called monoculture?
    11·2 answers
  • What does biodiversity mean?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!