27. Which statement best describes a chromosome? A) It is a gene that has thousands of different
forms.
B) It has genetic information for traits of an
organism that is contained in DNA.
C) It is a reproductive cell that influences more
than one trait.
D) It contains hundreds of genetically identical
DNA molecules for one trait.

B

Explanation:

Chromosomes are structures composed of DNA that, in turn, carry the genes of a living being, responsible for defining the physical characteristics of each individual. Chromosomes are involved in the nucleus of cells that make up a living being.

individual oxygen atoms are formed during photosynthesis.-c.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: