Explain the concept of polygenic inheritance. Be sure to include discussion of the process of meiosis
What will be an ideal response?
* Polygenic inheritance is the principle that complex traits are determined by a number of genes.
* Meiosis is the process of cell reduction, in which half the chromosomes are contributed by each member of the pair that created the newly-formed zygote.
* During meiosis, each pair has an equal chance of being selected, therefore it is unlikely that the exact same sequence of chromosomes will occur again.
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The Premarital Relationship Enhancement Program (PREP) involves couples meeting in small groups to discuss marital relations and to learn communication skills. What has research revealed concerning the effectiveness of this program?
a. Couples that go through this program report higher marital satisfaction after three years than do couples in the control group. b. Couples that go through this program report less marital satisfaction three years later than do couples in the control group. c. Couples that go through this program report more satisfaction, but they also report more conflict than do the couples in the control group. d. Couples that were randomly assigned to this program reported less marital satisfaction after three years than did couples who made the decision on their own to participate.
Which individual is most likely to be described as young-old?
a) Robert, who is 65 years old and in frail health b) Daniel, who is 80 years old and can still play softball c) Leanne, who is 70 years old and suffering from Alzheimer's disease d) Roberta, who is 50 years old and suffering from Parkinson's disease