There are two main types of chromosomal disorders, those that take place on the 21st pair of chromosomes and those that ______________
a. take place on the 20th pair
b. take place on the 22nd pair
c. involve the sex chromosomes
d. involve rapidly developing chromosomes
Answer: B
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Sarah's mother has Huntington's disease, an illness that results from a dominant gene. Her father, on the other hand, does not have the illness. What is the likelihood that Sarah herself will develop the disease?
a. Sarah has no chance of developing the disease, as she would have inherited a healthy allele from her father. b. Sarah probably has a 50 percent chance of developing the disease, as her mother could have given her either a healthy allele or an allele that produces the illness. c. Sarah has a 50 percent chance of developing the disease, because her mother would not have the disease herself unless she was homozygous for Huntington's disease. d. Sarah has a 25 percent chance of developing the disease, because her father could be a carrier.
Learning theorists focus on enduring personality characteristics
Indicate whether the statement is true or false
The heart and nervous system begin to form when the developing child is categorized as a(n) ________
A) fetus B) zygote C) embryo D) blastocyst
A tourist had never been to Paris before, and when she got off the train she was totally confused. People were everywhere and she was being swept along by the crowd. Suddenly, she was aware that someone was calling her name
This example best illustrates a. the unconscious. b. preconscious memories. c. unattended information. d. nonconscious processes.