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Exam 2: Biological Beginnings

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Question 51

Multiple Choice

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Human embryos must possess ________ to be viable.

A) at least one X chromosome
B) two Y chromosomes
C) at least one Y chromosome
D) three Y chromosomes

E) A) and B)
F) B) and C)

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Question 52

Multiple Choice

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Sasha's 23rd chromosome pair contains two X chromosomes. This indicates that Sasha

A) has Down syndrome.
B) has fragile X syndrome.
C) is a female.
D) is a male.

E) B) and D)
F) None of the above

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Question 53

Short Answer

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During the early stages of a pregnancy, a single zygote splits into two genetically identical replicas. The genetically identical replicas of the single zygote indicate that the pregnant person will have ________ twins.

________ refers to an abnormally small brain of a fetus that can lead to intellectual disability.

Benny has been diagnosed with a gene-linked abnormality characterized by deceleration of mental and physical development caused by an accumulation of lipids in the nervous system. He has been put on medication and a special diet, but his family has been told that he will probably not live beyond the age of five. Benny is suffering from

Tracy's parents are avid sports fans. Since she was a child, they took her to numerous baseball and football games, and Tracy regularly watched the sports channel with her dad. When she was old enough, her parents made her join the little league team at her school and she performed well. This is an example of a(n)

Don and Ellie are trying to conceive a baby. How long should they wait before they suspect infertility?

Which of the following is an example of a chromosomal abnormality that occurs when whole chromosomes do not separate properly during meiosis?

________ is a gene-linked abnormality in which the central nervous system deteriorates, producing problems in muscle coordination and mental deterioration.

In the context of evolution and life-span development, which of the following statements is true of Paul Baltes (2003) ?

Assume that in the case study of the Jim and Jim twins, it was found that their similar development trajectories were a result of similar temperament and interests, which caused them to seek out similar environments that were compatible and stimulating to them. Which heredity-environment correlation is reflected in this scenario?

Esperanza, who is in the 11th week of her pregnancy, is undergoing a prenatal diagnostic test that involves the removal of a small sample of the placenta. The doctor informs her that the test may detect any genetic defects and chromosomal abnormalities in the fetus and that she will have to wait for at least 10 days for the diagnosis. In this scenario, which of the following prenatal medical procedures is Esperanza most likely undergoing?

The food-scarce environment of our ancestors likely led to humans' propensity to gorge when food is available and to crave high-caloric foods, a trait that might lead to an epidemic of obesity when food is plentiful. This illustrates how

What are some of the possible causes of infertility in women and men? Name two strategies that can be used to overcome infertility.

Differentiate between open and closed adoption. Analyze the effect of open adoption on the overall development of the adopted child.

________ correlations occur because a child's genetically influenced characteristics elicit certain types of environments.

Females who have one abnormal copy of a mutated gene on the X chromosome are known as

During the process of ________, a cell's nucleus-including the chromosomes-duplicates itself and the cell divides, resulting in the formation of two cells.

Lindsay's body does not produce enough insulin, causing abnormal metabolism of sugar. She is receiving insulin treatment. Lindsay has

Samantha is diagnosed with a genetic disorder. She suffers from glandular dysfunction that hinders mucus production. She has difficulty in breathing, and her digestion is hampered. She also has frequent lung infections and suffers from shortness of breath. In this scenario, which of the following genetic disorders is Samantha most likely suffering from?