Units of dna that encode for specific characteristics is called

Aboy with an extra x chromosome probably has which of the following syndromes?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above