Down syndrome is a genetic disorder caused by the presence of an extra chromosome in the body cells of humans. This extra chromosome occurs in a gamete as a result of: * 1 point
An error in meiotic cell division
An error in the process of cloning
Replication of a single chromosome during mitosis
A gene mutation

answer: blah

explanation:

bc blah

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

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.