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Naddika [18.5K]
3 years ago
8

How many chromosomes do down syndrome humans have?

Biology
1 answer:
jok3333 [9.3K]3 years ago
8 0
They have 46, instead of the usual 47.
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La bile est sercetee par quoi?
Flura [38]
I don’t understand either
5 0
3 years ago
What are the different parts of a bacteriophage? Where is the DNA stored in this virus?
Yuliya22 [10]

Answer:

What are the differents parts of a bacteriophage?

The tailed phages have three major components: a capsid where the genome is packed, a tail that serves as a pipe during infection to secure transfer of genome into host cell and a special adhesive system (adsorption apparatus) at the very end of the tail that will recognise the host cell and penetrate its wall.

Where is the DNA stored in this virus?

Where is DNA stored in viruses?

The genome of most DNA-containing viruses that infect eukaryotic cells is transported (with some associated proteins) into the cell nucleus, where the cellular DNA is, of course, also found.

Explanation:

Hope it helps you!

8 0
3 years ago
What is difference between Microtubules and Microflaments?
Nina [5.8K]

Microfilaments

Microfilaments are fine, thread-like protein fibers, 3-6 nm in diameter. They are composed predominantly of a contractile protein called actin, which is the most abundant cellular protein. Microfilaments' association with the protein myosin is responsible for muscle contraction. Microfilaments can also carry out cellular movements including gliding, contraction, and cytokinesis.

Microtubules

Microtubules are cylindrical tubes, 20-25 nm in diameter. They are composed of subunits of the protein tubulin--these subunits are termed alpha and beta. Microtubules act as a scaffold to determine cell shape, and provide a set of "tracks" for cell organelles and vesicles to move on. Microtubules also form the spindle fibers for separating chromosomes during mitosis. When arranged in geometric patterns inside flagella and cilia, they are used for locomotion.

Hope this helps :)

5 0
3 years ago
The monarch butterfly can be found in a wide range of areas across Canada and the northern United States during the spring and
hichkok12 [17]

In order to survive the winter, monarch butterflies "migrate to warmer areas".

<u>Option: B</u>

<u>Explanation:</u>

  • The survival for Monarch butterflies is not possible in any of the United States 'cold winters, therefore they are needed to migrate south and west every autumn to avoid the cold temperatures.
  • This species migration usually begins around every year in October, but may begin quicker if the weather turns cold earlier than that.
  • Thus they spend their winter hibernation all year round in Mexico and some areas of Southern California where the temperature is warmer.
  • If the monarch stays in the Eastern states, typically east of the Rocky Mountains, then they will migrate to Mexico and hibernate in <em>oyamel fir</em> trees.
6 0
3 years ago
A couple is having a baby.The father is homozygous dominant (HH) for curly hair. The mother is homozygous recessive (hh) for str
Alona [7]

Answer:

Your question is incomplete but supposing that the mother is a recessive allele and the father is dominant, we deduce that his daughter could have curly hair or else wavy hair that would be a combination of the two since both parents can incompletely dominate

Explanation:

The chances that your child has curly hair is 50%, that is, it would be the most likely, and also the genotype that you would need for this child to have curly hair would be: CC with CS or CC with CC

5 0
3 years ago
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