Answer:
In the case of HIV-1, this loss-of-function mutation has proven to be beneficial.
Explanation:
Loss-of-function mutations are those that result in a gene product that has less or no function compared to the unmutated gene. When the allele completely loses function, (null allele), it is called an amorphous mutation. Phenotypes associated with these mutations are usually recessive, except when the organism is haploid, or when the reduced dosage of the normal gene is not sufficient to produce a normal phenotype (this phenomenon is called haploinsufficiency).
As mentioned earlier, this type of mutation results in a defective gene, but the text shown in the above question shows an example of a beneficial loss-of-function mutation because this mutation provides resistance to HIV-1 infection.
try to eat only when your hungry not just craving something and try to not eat more than you need it takes 20 mins for your brain to realize your full focus more on eating better then exercise it like 20 percent of what cause wait lost or somethin lol and just stay motivatied dont get mad at your self if you eat a cupcake and drink lost of water
Answer:
you should tell jaden your not interested
Explanation:
The arteries (red) carry oxygen and nutrients away from your heart
Answer Options:
- Having a large number of them is suggestive of Parkinson's.
- They are only found in the brains of people with Alzheimer's.
- They are only found in the brains of people with Parkinson's.
- Having a large number of them is suggestive of Alzheimer's.
Answer:
- They are only found in the brains of people with Alzheimer's.
Explanation:
Neurofibrillary tangles are abnormal accumulations of a protein called tau inside the neurons in the brain. They are a hallmark of Alzheimer's disease.
These tangles block the transport system, which harms the communication between neurons and disrupts the functioning of the brain.
