Of the several known modes of genetic inheritance, three mechanisms are most important. Identify and describe each of the three mechanisms.
What will be an ideal response?
Ans: 1. Autosomal dominant inheritance is characterized by expression of a trait (i.e., hearing loss) even if the gene for it is carried on only one chromosome of a matched pair.
2. Autosomal recessive inheritance is characterized by the fact that both genes of a pair must carry the characteristic in order for it to be expressed. An example of this type of inheritance is Usher syndrome.
3. The third mechanism of genetic transmission is X-linked inheritance. In the X-linked form of this transmission mode, the parents are apparently healthy, and the altered gene is associated with the X chromosome of the male offspring.
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A research study found that the multiple correlation (R) of three variables (SAT, HS rank, and HS GPA) with freshman college GPA was .60 . The researcher would report that
a. the average correlation of each of the variables with college GPA is .20. b. 60 percent of the variance in college GPA can be explained by the combined variables. c. 36 percent of the variance in college GPA can be explained by the three variables in combination.
Conduct disorder, anxiety-withdrawal, immaturity and socialized aggression all fall under the category of
autism.
Indicate whether the statement is true or false.The early childhood materials that Serbin believes contribute most to the ability to solve cognitive problems requiring spatial visualization are:
a. various forms of collage. b. unit blocks. c. jungle gyms and climbing apparatus. d. puzzles.
According to the research conducted by Reynolds and Baird (2011), what was the negative impact of setting high goals?
a. It increased depression rates b. It reduced the likelihood of goal achievement c. Both statements are correct d. Neither statement is correct