How many and what type of chromosomes would be expected in a karyotype of a human male?
22 pairs of autosomal chromosomes and 2 y chromosomes. 23 pairs of autosomal chromosomes and 2 y chromosomes.
22 pairs of autosomal chromosomes, 1 x chromosome, and 1 y chromosome.
23 pairs of autosomal chromosomes, 1 x chromosome, and 1 y chromosome

Skulls of (1) modern gorilla, (2) australopithecus afarensis, (3) homo erectus, (4) homo neanderthalensis, (5) homo sapiens based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ? (2 points)

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.

Most of the carbon on earth is stored in the form of