For several weeks Allen had to clean the men’s restroom at the restaurant where he worked. The task always made him nauseated. He has since gone on to better things, but still cannot walk by the door to a men’s restroom without becoming slightly queasy. For Allen, the door to the men’s room has become:

Raj is a participant in a memory experiment. He is asked to learn a list of 30 words of common objects, in order. The experimenter finds that Raj remembers best the words at the beginning and end of the list. The psychological term for this phenomenon is:

Charles has just learned about elaborative rehearsal as a way of improving memory. He wants to use this method in studying for an upcoming exam. Which of the following methods would fit the criteria for this kind of rehearsal?

Julio served in the war in Afganistan and was severely traumatized when a rocket propelled grenade exploded next to his Humvee. Recently, Julio was studying in the library and a large book fell off a high shelf and banged on the floor. The noise brought Julio instantly to his feet. In terms of classical conditioning, his response can best be explained by:

Jane has a son who has Duchenne muscular dystrophy, which is inherited as an X-linked recessive trait. At a molecular level, the disease is due to lack of the protein dystrophin. Jane participates in a study to look at dystrophin levels in various muscles, so she has cells sampled from 10 different muscles. Some cells make dystrophin, and some do not. An explanation for this finding is that

A healthy woman has two previous pregnancies that ended early because the fetuses developed a severe mtDNA disorder. In order to increase the chance of having a healthy baby without a mtDNA disorder, her medical team recommends a new approach for the woman. They recommend:

Two individuals who do not have Tay Sachs disease have a baby who is born with Tay Sachs – an autosomal recessive disorder. The individuals must be  and the probability that their next child has Tay Sachs is .

Regarding the mitochondria, please select ALL that apply.

A healthy man and a healthy (unaffected) woman have a son with Lesch-Nyhan syndrome, an X-linked recessive trait. What is the percent chance that this couple’s daughter will have Lesch-Nyhan syndrome?

Brachydactyly is a shortening of fingers and toes due to unusually short bones. There are many different types of brachydactyly and one type (Type D) is due to an autosomal dominant allele, but the homozygous dominant genotype results in embryonic lethality. What is the percent chance (___%) that two individuals with Type D brachydactyly will have a child who does NOT have brachydactyly? Enter your answer as a whole number ___%.