Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

A) genetic imprinting 
B) polygenic inheritance 
C) sex-linked genes 
D) chromosomes

Question 3

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

Accepted Answer

A) bidirectional; unidirectional 
B) one-sided; bidirectional 
C) dynamic; linear 
D) balanced; biased

Question 4

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?

Accepted Answer

A) Susceptibility genes 
B) Longevity genes 
C) Vulnerability genes 
D) Mutated genes

Question 5

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

Accepted Answer

A) 46 paired 
B) 23 unpaired 
C) 23 paired 
D) 46 unpaired

Question 6

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

Accepted Answer

The answer of What is a complex molecule,with a double...

Question 7

Which of the following statements is true about adopted children?

Accepted Answer

A) Nonadopted children are more likely to experience school-related problems than adopted children. 
B) Children who are adopted early in life are more likely to have positive outcomes than those adopted later in life. 
C) Adopted children should never be allowed to meet their birth parents. 
D) Most adopted children struggle with school,peer relationships,and self-esteem.

Question 8

Name and describe three prenatal diagnostic tests.

Accepted Answer

The answer of Name and describe three prenatal diagnostic tests....

Question 9

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:

Accepted Answer

A) each zygote is unique. 
B) longevity genes can make an individual less vulnerable to certain diseases. 
C) for each genotype,a range of phenotypes can be expressed. 
D) mutated genes can be a source of genetic variability.

Question 10

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

Accepted Answer

The answer of What is the psychological perspective that emphasizes...

Question 11

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

Accepted Answer

A) Cystic fibrosis 
B) Phenylketonuria 
C) Huntington's disease 
D) Tay-Sachs disease

Question 12

Behavior geneticist Robert Plomin has found that shared environment:

Accepted Answer

A) is independent of heredity influences. 
B) accounts for most of the variation in children's personality or interests. 
C) is responsible for higher incidence of rivalry and aggression between siblings. 
D) accounts for little of the variation in children's personality or interests.

Question 13

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?

Accepted Answer

A) Black eyes 
B) Blue eyes 
C) Grey eyes 
D) Brown eyes

Question 14

_____ 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.

Accepted Answer

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

Question 15

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

Accepted Answer

A) a genealogist. 
B) a genetic counselor. 
C) a chromosomal advisor. 
D) a physiologist.

Question 16

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.

Accepted Answer

The answer of Violet is undergoing a prenatal test where...

Question 17

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

Accepted Answer

A) Fertilization 
B) Osmosis 
C) Meiosis 
D) Mitosis

Question 18

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

Accepted Answer

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

Question 19

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:

Accepted Answer

A) XYY syndrome. 
B) Fragile X syndrome. 
C) Turner syndrome. 
D) XXO syndrome.

Question 20

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:

Accepted Answer

A) spina bifida. 
B) Tay-Sachs disease. 
C) phenylketonuria. 
D) Huntington's disease.

Exam 2: Biological Beginnings

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