What are characteristics of polygenic traits? Select all that apply.

A. Traits are continuous across a range.

B. Traits are discrete.

C. Traits are always found in a 9:3:3:1 ratio.

D. On a histogram, traits distribute on a bell-shaped curve.

Which statements are true of a scientific theory but not a hypothesis

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

What is the average speed of a car that traveled 300.0 miles in 5.5 hours