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3 years ago

What is the main genetic issue of neurofibromatosis? Why does that cause a disease or issue?

1 answer:

4 0

Neurofibromatosis is a genetic disorder that causes tumors to form on nerve tissue. These tumors can develop anywhere in your nervous system, including your brain, spinal cord and nerves. Neurofibromatosis is usually diagnosed in childhood or early adulthood.

The tumors are usually noncancerous (benign), but sometimes can become cancerous (malignant). Symptoms are often mild. However, complications of neurofibromatosis can include hearing loss, learning impairment, heart and blood vessel (cardiovascular) problems, loss of vision, and severe pain.

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During which phase of the cell is a cells DNA copied

MakcuM [25]

Explanation:

Hi there!

Cell cycle has 2 phases (i.e M-phase and Inter-phase). Interphase is considered to be the longest phase. Interphase also has G1-phase, S-phase and G2-phase. In cell cycle while moving from M-phase it has two option either to go in G1-phase or G0 phase. It it goes to G0-phase it doesn't go under cell division but if it goes to G1-phase it starts to prepare materials required to replicate or copy DNA. After preparing all the material it goes in S-phase and copies DNA. It doesn't go to G2-phase until it copies DNA perfectly. Then it goes to G2-phase. In this phase it prepares material for replication of other cell organelles.

Therefore, DNA is copied in S-phase.

Hope it helps!

6 0

3 years ago

Read 2 more answers

What process breaks larger molecules into smaller pieces?

Wewaii [24]

I’m pretty sure it’s catabolic reactions.

6 0

3 years ago

"Synthesis of one protein cannot take place without the presence of another protein." Is this statement true or false and why? T

lbvjy [14]

The third option:This statement is true because every step in protein synthesis requires enzymes, which are nothing but proteins.
I mean if you look at rRNA which is needed to make polypeptide chains, it is 2/3 protein, and then the helices, ss binding proteins, DNA polymerase and everything in transcription is protein.
So that last option/ third option is the best

8 0

3 years ago

There are 3 possible genotypes: NN, MN, or MM. In a group of 500 people, the frequency of genotype NN is 40%. How many individua

Readme [11.4K]

235 are the Individual numbers that would expect to have the MN type of genotype.

There are two equations necessary according to Hardy-Weinberg Equilibrium:-

p + q = 1

p² + 2pq + q² = 1

Let,

NN= p

NM=2pq

MM=q

So, according to the question, the frequency of genotype NN is 40%

40% of 500 = $\frac{500*40}{100} = 200$ Numbers of individuals

Frequency of individuals p = $\frac{Numbers of individuals}{Total populations}$ = $\frac{200}{400} = 0.4$

Find p² by taking the square root of p.

√(p) = √(0.4)

= 0.632

So, pp + qq = 1

qq = 1 - pp = 1 - 0.63

q = 0.37

The allele frequencies in the population are known, now finding the frequency of heterozygous genotype.

By Multiplying 2 × p ×q to get heterozygous genotype

2pq = 2 × 0.63 × 0.37` = 0.47

2pq = 0.47

So, 2pq × total population = 0.47 × 500 = 235, NM genotype.

Learn more about Hardy-Weinberg Equilibrium here,

brainly.com/question/16823644

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4 0

2 years ago

Giraffes have changed over time to have long necks so that they can reach leaves on tall trees and drink water from a low pool e

SOVA2 [1]

Answer:

this illustrates that giraffes have adapted over time to their surroundings and needs.

Explanation:

i dont know if this is correct but it seemed like the obvious answer to me if i need to elaborate tell me

4 0

3 years ago