All cells of the human body contain 23
a. pairs of chromosomes.
b. chromosomes.
c. pairs of genes.
d. genes.
e. alleles.
Question 2
Doris works a stressful job, has difficulty falling asleep, and she often wakes up early. After several weeks, she agrees to participate in a sleep study to determine whether she has insomnia.
It is likely that the results of her sleep study show Doris:
a. spends less time sleeping as people who do not complain of insomnia.
b. is lacking in the substances that promote and maintain sleep.
c. spends as much time sleeping as people who do not complain of insomnia.
d. has an excess of arousal-producing neurochemicals.
Electron micrograph of the plasma membranes of two cells showing the glycocalyx.
Anterior and posterior body regions.
The bridging ability of IgM: (a) Pictorial view of IgM bridging of red cells. (b) Macroscopic view ...
Human Diseases Associated with Copy Number Variants
Examples of Human Disorders Caused by Single-Gene Mutations
A single cell from an early-stage human embryo