Help To Check This Also

Biology

1 answer:

FrozenT [24]2 years ago

4 0

I think the first one is right !.... but the for the other one it's B .

You might be interested in

In sickle-cell disease, variation in one gene causes red blood cells to bend, or sickle. This means the sickled cells _____.

Savatey [412]

Answer:

A case study of the effects of mutation: Sickle cell anemia. Sickle cell anemia is a genetic disease with severe symptoms, including pain and anemia. The disease is caused by a mutated version of the gene that helps make hemoglobin — a protein that carries oxygen in red blood cells.

Explanation:

5 0

2 years ago

Griffith called the process he observed transformation because

Eva8 [605]

Answer:

The correct answer would be the harmless bacteria had been transformed.

Griffith used two different strains of the bacteria <em>Streptococcus pneumoniae - </em>type-III-S or smooth strain and type II-R or rough strain.

Smooth strain had protective covering around itself (protect itself from hosts's immune system) and was able to kill the mice.

Rough strain did not have any protective covering around itself and thus could be easily removed by the immune system Hence, it was not able to kill the mice.

In addition, heat killed smooth strain was also not able to kill the mice. However, when remains of it was added with rough strain then the blend was able to kill the mice.

Lastly, he was able to isolate living bacteria of both the strains.

He concluded that non-lethal type II-R strain was transformed into lethal type II-S strain by "transforming principle" (which we know today as DNA) that was supposed to be the part of dead III-S strain bacteria.