Exam 3: Genes, Environment, and Development

It is estimated that about _____ percent of the human genome consists of what are traditionally defined as genes.

Three friends have just told you they were recently diagnosed with genetic disorders. One has PKU, one has Tay-Sachs disease, and the other has Huntington's disease. None of them knows anything about these disorders. Please explain to each how they got the disease and their general prognosis (i.e., how will the disorder affect them in the future?).

A change in the structure or arrangement of one or more genes that produces a new phenotype is called a _____.

During an amniocentesis, a catheter is inserted into the mother's vagina and cervix.

A typical human being has _____ pairs of chromosomes that constitute autosomes.

Schizophrenia appears to be the result of possessing an apoE gene.

Describe and give an example of a recessive and a dominant gene. Then differentiate between incomplete dominance and codominance.

Alleles are

It was noted in the text that the genetic "code" is best thought of as written in

A service that provides potential parents with information on the risk of a child of theirs being born with an inherited disorder is called _____ counseling.

Why do children growing up in the same home often turn out to be quite different from one another?

Baby Gerber smiles and coos so often and is so delightful that his parents feel compelled to smile and chatter right back at him. Which sort of genetic environmental does this best illustrate?

Which is NOT one of the genetic code bases of human DNA?

When studying heritability in humans, an ethical behavior geneticist would be LEAST likely to

The consistent parenting style exhibited by parents toward all their children would represent a _____ for the children.

Which statement concerning the genetic code is FALSE?

In Kettlewell's research, the proportion of dark-colored moths increased as _____ increased.

A high concordance rate between identical twins for schizophrenia would suggest that the disorder

Jack desperately wants to have a son. He and his wife already have three children, all girls. Jack divorces his wife and remarries. He expects that his new wife will be more successful in providing him with a son. Which of the following is true?

Which is the most genetically complex structure?