Ch. 11 Study Guide

Multiple Choice
Identify the choice that best completes the statement or answers the question.

____	1.	In a plant that has red flowers, red flower color, R, is completely dominant to
white flower color, r. If the plant is heterozygous for flower color, which
alleles will be carried by the gametes it produces?
a.	R and r	c.	r only	
b.	R only	d.	Rr only	

____	2.	
a.	Three-quarters of the plants are tall and purple.	c.	All are short and white.	
b.	Three-quarters of the plants are short
and white.	d.	All are tall and purple.	

____	3.	
a.	is carried only by females in this family	c.	is a sex-linked gene	
b.	is a recessive genetic trait	d.	requires both parents to be albinos	

____	4.	
a.	2 red, 1 pink, 1 white	c.	1 red, 1 pink, 2 white	
b.	1 red, 2 pink, 1 white	d.	2 red, 2 white	

____	5.	
a.	One in four	c.	Three in four	
b.	Two in four	d.	Four in four	

____	6.	The Human Genome Project was begun in 1988 by scientists from 13 nations as a worldwide effort to understand the sequencing of all of the DNA in the human body. What is one potential scientific benefit of this research?
a.	It will help to explain human cultural
differences.	c.	It will help find the genes responsible
for many diseases.	
b.	It will create communication between
research centers.	d.	It helps to classify man most accurately in the animal kingdom.	

____	7.	The discovery that chromosomes are involved in inheritance was made possible by the invention of the ? —
a.	microgram scale	c.	computer	
b.	microscope	d.	mercury thermometer