Answer:
Rugby is a contact sport that is played between two opposing teams made up of 15 players each, with the aim of taking an oval ball to the rival's goal line. The ball cannot be passed forward, but always backwards, so it is important that the players have forward strokes to advance with the ball, which can be touched with any part of the body, although in the game the hands are mostly used. At the same time, it is a very hard and rough sport, since impacts through tackles are the main form of defense, with which there are usually certain injuries in the development of matches.
It is a sport of British origin, although it is also very popular in France, Oceania and Argentina. Being such a massive sport, it does not allow us to discover a culture so deeply rooted in the sport itself, although the chivalry of the game is a factor attributed to British culture.
Cartilage ear piercings may take up to a year to fully heal, but generally take 3-6 months (as opposed to the ear lobe, that takes just 4-6 weeks). They heal from the outside in, so even if it looks fine on the outside, you should not assume it is fully healed.
<span>The two
membranes of the mitochondria and the inner and outer membranes of the
chloroplast have similar functions. The external membrane of the mitochondria
serves as covering of the organelle to protect it; while the internal lining
which is folded repeatedly in layers contains proteins. Likewise, the
chloroplast has inner and outer membranes too that contain and protect its
different parts such as the stroma and thylakoids.</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.
