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
How many alleles must be damaged to acquire a gain of function?
Kryger [21]
They do not directly funtion
3 0
3 years ago
How can oil spills affect the ability of sea birds to access resources such as food and shelter? How will other animals that dep
yanalaym [24]

Answer:

An area affected by an oil spill can become unhabitable for the sea birds' source of food because of toxic poisons and in turn, make it uninhabitable to the sea birds. The animals that depend on the birds for food will have fewer available options for prey and their population may lower. If the area affected by the oil spill has low biodiversity it will have a great effect on the food web.

3 0
3 years ago
Read 2 more answers
Pls help its time<br> Question 5 (5 points)<br> Active transport requires the use of____.
OlgaM077 [116]

Answer:

d

Explanation:

8 0
3 years ago
All organisms begin life as a ____________ cell.
MrRissso [65]

Answer;

-Single

All organisms begin life as a single cell

Explanation;

-Every living organism begins life as a single cell. Unicellular organisms may stay as one cell but they grow too. Multicellular organisms add more and more cells to form more tissues and organs as they grow. Growth and development of living organisms are not the same things.

-In unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell. In multicellular organisms, mitosis produces more cells for growth and repair.

3 0
3 years ago
Read 2 more answers
What is the relationship between gene expression and human reproduction and development? <br> plss
earnstyle [38]

In the same way, cells during development also express specific sets of genes. These patterns of gene expression cause cells to communicate with neighboring cells, resulting in coordinated development into a multicellular organism.

5 0
2 years ago
Other questions:
  • Which statement describes an advantage of models?
    11·1 answer
  • I’m kinda confused on this project, any examples? I don’t understand what I am doing at all.
    14·1 answer
  • In a cladogram, when does a group of organisms branch off?
    11·1 answer
  • When double stranded dna is “cleaved” or cut. there are two ways that the cut might be repaired what are the two ways?
    14·1 answer
  • How does climate change cause the ocean's thermohaline current to slow down?
    6·2 answers
  • How much pontential is at the top of a roller coaster
    7·1 answer
  • What is the benefit of having both types of pigments?
    6·1 answer
  • Which of these nutrients can be found in all organic compounds?hat is the effect of the biogeochemical cycles?
    6·1 answer
  • What is the atomic number of an element with 12 protons, 10 neutrons and 12 electrons?
    8·1 answer
  • Which distinguishes the process of cytokinesis in plant and animal cells
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!