Wich best describes somatic mutations? a)they are usually passed to offspring. b)they can cause different kind of cancers. c) they always result from point mutations. d)they only occur in reproductive cells

The correct answer will be B.(Can cause cancers)

Explanation:

Somatic mutations are mutations present or found in the somatic cells or non-germ-line cells.

since these mutations are present in the somatic cells and not in the germ cells so they cannot be passed on to the progeny.

But these mutations in the somatic cells can cause  tumor which can lead to cancer. This happens if the gene causing cancer for e.g- Proto-oncogene or tumor suppressor gene is involved in cell division is mutated. So, the mutated gene is passed on to the daughter cells during cell division and shows uncontrolled differentiation of cells causing cancer.

Thus, option B is correct.

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blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.