Which phrase best describes a gene?

1.

a segment of a DNA molecule found only in the body cells of an organism
2.

a segment of a DNA molecule found only in the gametes of an organism
3.

a segment of a DNA molecule that contains the instructions for producing a trait in an organism
4.

a segment of a DNA molecule that contains the instructions for producing all the characteristics of an organism

3. A segment of a DNA molecule that contains the instructions for producing a trait in an organism

Explanation:

Choice 3 would best describe a gene because they are segments of DNA that contain instructions for producing one trait rather than all of the characteristics of an organism.

protocol for imps extraction focusing on membrane protein extraction, solubilisation, and purification.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.