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3 years ago

What is used to prevent a viral infection?

Biology

1 answer:

Rufina [12.5K]3 years ago

7 0

Answer:

Please mark me brainliest

Explanation:

Many of these diseases can be prevented by the use of viral vaccines, which stimulate protective immunity against the virus without causing major disease. Viral vaccines may also be used in active viral infections, boosting the ability of the immune system to control or destroy the virus.

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In corn, the allele A allows the deposition of anthocyanin (blue) pigment in the kernels (seeds), while aa plants have yellow ke

lara31 [8.8K]

Answer:

Explanation:

As given,

Allele A for blue anthocynin.

aa for yellow kernel;

at second locus;

W produce smooth kernel,

ww for wrinkled kernel;

Parents as given are: AaWw and aaww

Progeny are:

blue smooth ( AaWw)= 1447;

blue wrinkle (Aaww)= 169;

yellow smooth (aaWw)= 186;

yellow wirnked (aaww)= 1510

Recombinant progeny are 169+ 186= 355

non- recombinant progeny are = 1447+ 1510= 2957

so recombination frequency (RF)= 346/2957×100= 12.0054%

So a and w are linked genes.

They are 12 mu far away from each other.

b) Blue smooth parent= AaWw.

c) Aaww crossed with aaWw

progeny are= AaWw, Aaww, aaWw, aaww,

They all are produced in same proportion =0.25% or 1/4.

5 0

3 years ago

Choose "innate" if the behavior is an innate behavioral adaptation and "learned" if it is a learned behavioral adaptation.

harkovskaia [24]

<span>Chicks hatching from eggs is an innate behavior. Innate behavioral adaptations are the result of millions of years of evolution. This type of behavior is already "hard-wired" in the nervous system of organisms and is usually inflexible. This is where a certain given stimulus triggers the exact same response over particular organisms through time. The same adaptation goes for other species that are naturally inclined to walk hours after their birth, like giraffes and elephants do. It is in a way nature's natural adaptation for species to survive through the course of time.</span>

8 0

4 years ago

Why does the amount of daylight we see each day change throughout the year?

AlladinOne [14]

Yes it dose because you will notice during the winter it's more dark and
cloudy and changes through the seasons

7 0

3 years ago

While human cells have a number of mechanisms to repair damaged DNA, these mechanisms are not perfect. Describe two conditions o

amm1812

Answer:

1). Xeroderma pigmentation.

2). Ataxia-telangiectasia.

Explanation:

DNA repair processes include all the processes, which help in identification and correction of errors or damages in DNA. Defects in DNA repair mechanisms that increase risks for developing cancers and various other disorders. Two conditions related to faulty DNA repair are:

1). Xeroderma pigmentation (XP): XP can be defined as a genetic disorder, due to mutations in genes involved in repair processes. It leads to severe sunburn and freckling due to sun exposure, dry skin and skin pigmentation. People having xeroderma pigmentation are prone for skin cancer.

2). Ataxia-telangiectasia (AT): AT is caused bu mutation in ATM gene (ataxia-telangiectasia mutated) gene, which in involved in nucleotide-excision repair pathway. It leads to severe disability in children and increases risk for developing lymphomas and leukemia.

7 0

3 years ago

How might fat cells be able to help people with spinal injuries

Andrei [34K]

A Japanese research team reported that DFAT cells expressed neurotrophic factors, such as BDNF and GDNF, prior to and after transplantation and which likely contributed to the promotion of functional recovery of spinal damage.

4 0

4 years ago