Exam 2: Heredity and Environment

Suppose that eye color is a single gene trait and that brown eyes is a dominant allele and blue eyes is a recessive allele. If Mark has brown eyes, we would know:

Each year in the United States congenital anomalies (or birth defects) affect between 10% and 15% of all births.

If the gene for blue eyes is recessive, and if John's mother and father both have blue eyes, we know that John:

Olaf has been diagnosed with Klinefelter's syndrome. What is his chromosomal pattern?

Thomas (a man) knows that in his body, meiosis occurs in:

The two ways in which cells can divide are called:

The idea that nongenetic factors can influence how genes behave is referred to as "polygenic" influences.

Which of the following is NOT a sex-linked disorder?

Color blindness is a sex-linked trait. As such, if a child is color blind, we can be assured that the child's genotype includes:

The last stage of meiotic division, in which chance determines which half of each chromosome pair will go into which sperm or ovum, involves the process called:

How many PAIRS of chromosomes are in a normal human liver cell?

If a scientist were to clone a rat, the genetic code in the new rat produced would share what percentage of its genetic code with its parent(s)?

Scientists have been able to identify markers in the human DNA that distinguishes different races of people.

Mitochondrial disorders involve DNA that is inherited from the mother.

The nonshared environment for identical twins raised in the same home would be zero.

The term used to describe alternate versions of the same gene is:

Smith studies a group of 1,000 people who have schizophrenia and who also have identical twins. He finds that 47% of the identical twins also develop this disease. The type of statistical information Dr. Smith's study reveals is called:

Whitney believes that she is a capable, confident person who can usually succeed in whatever she tries to do. Psychologists would be most likely to conclude that she has:

Which of the following results from the process of meiosis?

About how many different proteins have been identified in the human body?