The extra chromosome which produces down's syndrome is:

options:
an autosome
a "x" chromosome
a "y" chromosome
either "x" or "y" chromosome

Asap i will reward you brainliest for best which sentence about protists is accurate? all protists are unicellular and microscopic in nature. they have organelles, so protists are eukaryotic in nature. all protists make their own energy through photosynthesis.

What are the 3 types of artificial cloning

What form of anesthetic was used for field surgery