Question

(q012) after a very stressful midterm exam, sherri needed to relax. as she lay on her bed, she felt her breathing slow and her heart rate decrease. which of the following divisions of sherris autonomic nervous system was likely in control of her organs?
o a. somatic
o b. peripheral
o c. sympathetic
o d. parasympathetic

question 13
(q013) marco and lilah are male and female twins born 5 minutes apart. some people call them \fraternal\ twins, but you know that the technical name is
_twins.
o a. monozygotic
o b. transgenetic
o c. conjoined
o d. dizygotic

question 14
(q014) ellie and samantha are monozygotic twins who were raised in different families and have never met. what trait could we expect them to have in common?
o a. career achievement
o b. all the answer options are correct.
o c. scores on iq tests
o d. likelihood to start fights

question 15
(q015) dalyq, a behavioral geneticist, is studying the interaction of heredity and environment. when he looks at monozygotic twins who are raised together, what will he probably see in their phenotypes?
o a. their environments will cause them to have very different phenotypes.
o b. their genotypes will predispose them toward certain traits, but their environments influence whether those traits are expressed in their phenotypes.
o c. they will have exactly the same phenotype.
o d. their genotypes will cause them to have very different phenotypes.

Explanation:

• Question 12: The parasympathetic nervous system is responsible for the body's "rest - and - digest" functions, which include slowing breathing and heart rate during relaxation.
• Question 13: Fraternal twins are dizygotic, formed from two separate eggs fertilized by two separate sperm.
• Question 14: Monozygotic twins share the same genetic material. IQ scores have a genetic component, so we might expect them to have similar IQ scores. Career achievement and likelihood to start fights are more influenced by environment.
• Question 15: Genotypes predispose individuals to certain traits, but environmental factors play a role in whether those traits are expressed in phenotypes, even in monozygotic twins raised together.

Answer:

• Q012: d. parasympathetic
• Q013: d. dizygotic
• Q014: c. scores on IQ tests
• Q015: b. Their genotypes will predispose them toward certain traits, but their environments influence whether those traits are expressed in their phenotypes.