Your friends, younger siblings, a partner, yourself.
Very true.
Milk is a protein and builds up the body.
<span>For most people, dieting is a way to lose weight, so it is often undertaken by those who are overweight or obese and need to reduce their body weight to stay healthy. Therefore, lowering blood pressure and avoiding disease are often second hand results of losing weight by dieting. Dieting rarely results in raised cholesterol. </span>
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.