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Exam 2: Biological Beginnings

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Question 61

Multiple Choice

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_____ mainly focuses on the isolation and examination of fetal cells circulating in the mother's blood and analysis of cell-free fetal DNA in maternal plasma.

A) Amniocentesis
B) Chorionic villus sampling (CVS)
C) Noninvasive prenatal diagnosis (NIPD)
D) Triple screen

E) All of the above
F) A) and D)

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Question 62

Multiple Choice

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The nucleus of each human cell contains _____,which are threadlike structures made up of deoxyribonucleic acid (DNA) .

A) mitochondria
B) ribosomes
C) chromosomes
D) mesosomes

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

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Question 63

Short Answer

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What is a complex molecule,with a double helix shape,that contains genetic information?

Emma and Anna are identical twins who were adopted by different families a few weeks after birth.Although genetically identical,they grew up with different physical and psychological characteristics.For example,though both inherited a tendency to grow large,Anna was slim and athletic due to the active lifestyle practiced in her adoptive family.This variability can be explained by how:

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:

Which of the following statements is true about adopted children?

Ethel is 50 years old but appears much more aged.Most of Ethel's relatives have not lived past the age of 60.Which of the following genes are responsible for the accelerated aging that is observed in Ethel and her family members?

Behavior geneticist Robert Plomin has found that shared environment:

As an alternative to "_____ evolutionism" presented in evolutionary psychology,Albert Bandura proposed a _____

_____ is a stage in reproduction whereby an egg and a sperm fuse to create a single cell.

What is the psychological perspective that emphasizes the importance of adaptation,reproduction,and "survival of the fittest" in shaping human behavior?

In human beings,by the end of meiosis,each egg or sperm has _____ chromosomes.

Name and describe three prenatal diagnostic tests.

Sandra excels in reading and spelling but struggles with mathematics.She is shorter than her peers and has a webbed neck.Her doctor has determined that she has one X chromosome missing.Sandra most likely has:

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

Vivanta has been diagnosed with Beckwith-Wiedemann syndrome,a growth disorder,which the doctor has indicated could be a result of _____ going awry.

Jule's 23rd chromosome pair consists of an X chromosome and a Y chromosome.This indicates that Jule:

Violet is undergoing a prenatal test where the doctor takes a small sample of the placenta and then analyzes it to detect genetic defects and chromosomal abnormalities.Name the procedure she is undergoing.

Clark's genotype contains a dominant gene for brown eye color and recessive gene for blue eye color.According to the dominant-recessive gene principle,which of the following phenotypes is most likely to be observed in Clark?

Brianna went to a doctor who specialized in identifying genetic flaws to help prevent risk of abnormalities.This doctor is called: