Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. turner syndrome occurs when a female has an incomplete set of sex chromosomes. symptoms of turner syndrome include swollen hands and feet, short stature, and infertility. which type of chromosomal mutation is responsible for causing turner syndrome?

a. polyploidy

b. tetraploidy

c. aneuploidy

d. trisomy

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas