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Exam 2: Heredity and Environment

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Question 1

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Anne mentions that her cousin has a congenital anomaly. You would know that this is sometimes also referred to as:

A) a sex-linked trait
B) a birth defect
C) an autosomal disorder
D) a heterozygous trait

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Question 2

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Blood type is a good example of a sex-linked trait, which means that certain blood types are more common in males than in females.

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Question 3

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Which of the following is the best example of what is usually meant by the term "nuclear family?"

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

Martin is worried that, if he has a child, the child might be "unlucky" and get the "bad half" of his chromosome pairs. Mr. Martin's worry would technically be referred to as an issue involving:

Compared to earlier estimates about the total number of genes in the human genome, it now appears that there are:

If you were to compare the DNA of any two unrelated people, about what percent of their DNA would be identical?

The primary function of proteins called antibodies is to speed up the chemical reactions within cells.

Sarah states, "All normal human skin cells contain 46 genes." To make Sarah's statement correct, you would need to:

While sitting in a quiet waiting room, Ronnie at first is quite distracted by the clicking sound made by an old clock ticking away the seconds. However, after a few minutes, he no longer notices the ticking. This example best highlights the concept involved in:

If a child has mutated genes on chromosome 15 contributed by the mother, he or she will be at risk for developing _____; if the mutated genes are from the father, he or she will be at risk for developing _____.

Many individuals who grew up during the Great Depression were so devastated by the collapse of the economy that they became distrustful of depositing large sums of money in banks. The Great Depression would best be considered a:

Another term used to refer to either ova or sperm is:

Normal adults have 46 chromosomes contained within each of their body cells. Thus, when a couple's sperm and ovum unite, the resulting baby will have 92 chromosomes in each body cell.

Which of the following genetic disorders is the result from a problem associated with the autosomes?

Todd is mentally retarded, sterile, and has small external genitalia, undescended testicles, and breast enlargement. His chromosome pattern is XXY. Since puberty, he has received hormone replacement therapy in order to maintain his secondary-sex characteristics. What sex-linked abnormality does Todd most likely have?

If different members of the family experience quite different environments, this would be reflected in:

Workers in Dr. Garcia's lab first obtain tumor cells from patients with cancer. They then remove the DNA from the tumor cell nuclei and use enzymes to segment the DNA strands into sections. Finally, they insert the DNA sections in which they are interested into "host" bacteria cells, where the DNA can be reproduced for later use. Dr. Garcia's lab is engaged in work involving:

Which of the following disorders occurs only when the gene involved is inherited from the mother and not the father?

Which of the following is NOT an example of a normative age-graded influence?