Which term describes the chromosomal abnormality of having three copies of a single chromosome? haploidy
diploidy
trisomy
tetrasomy

(this is on edge 2020 (21))

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

i think the answer would be d