Exam 2: Genetic Bases of Child Development

Your friends Shania and Ricky are expecting a baby. Both Shania and Ricky are farsighted and have cheek dimples. Shania and Ricky have said that they hope that their baby won't need to wear glasses or have cheek dimples because they both hate their glasses and dimples. What can you tell them about genetic inheritance and the likelihood that they will get their wish?

The problems associated with twin studies and adoption studies

The most common reason for fertilized eggs to spontaneously abort shortly after conception is

Your professor mentions in a lecture that activity level follows a polygenic pattern of inheritance. You, having already read

Adoption studies tend to study mothers more often than fathers because

Wendy's development was normal through childhood and early adulthood. However, during her 40s she began to experience muscle spasms, depression, and personality changes. Which of the following disorders or diseases is most likely to be causing her symptoms?

Tutu uses a twin study to determine the influence of heredity on emotionality. If emotionality is influenced by heredity, he will find that the level of emotionality is more similar in

A potential flaw of twin studies is that

The extra 21st chromosome that causes Down syndrome is

In vitro fertilization

Name and describe one disorder caused by an abnormal number of sex chromosomes that affects only males. In addition, name and describe one disorder caused by an abnormal number of sex chromosomes that affects only females.

Explain how a) twin studies, and b) adoption studies are used to determine the influence of heredity on a trait and discuss a potential flaw of each type of study.