Human Development Chapter
2 Test Bank – Questions and
Answers 2026 2027
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Page 1 of 57 Human Development Chapter 2 Test Bank – Questions and Answers 2026 2027.pdf
,Test bank - Human development (Chap 2) Page 2 2026-03-12
d. 23 matching pairs of
In each human cell, a nucleus contains _____ chromosomes.
a. 12
b. 12 matching pairs of
c. 23
d. 23 matching pairs of
c. chromosomes
The human nucleus contains 23 matching pairs of rod-shaped structures called _______.
a. genomes
b. DNA
c. chromosomes
d. zygotes
Page 2 of 57 2 Test bank - Human development (Chap 2).pdf
,Test bank - Human development (Chap 2) Page 3 2026-03-12
a. deoxyribonucleic acid (DNA)
Genes are composed of stretches of _____, a complex molecule shaped like a twisted ladder or
staircase.
a.deoxyribonucleic acid (DNA)
b. gametes
c. zygotes
d. nuclei
b. the blueprint for creating all of the traits that organisms carry.
Genes are:
a. rod-shaped structures located in each human nucleus.
b. the blueprint for creating all of the traits that organisms carry.
c. sex cells that combine to create a unique individual
d. identical molecules for every existing species on earth.
Page 3 of 57 3 Test bank - Human development (Chap 2).pdf
, Test bank - Human development (Chap 2) Page 4 2026-03-12
b. 20,000; 25,000
Researchers have estimated that ______ to ______ genes reside within the chromosomes and
influence all genetic characteristics.
a. 10,000; 15,000
b. 20,000; 25,000
c. 50,000; 70,000
d. 100,000; 200,000
c. genome
The ____ is the set of instructions to construct a living organism.
a. zygote
b. nucleus
c. genome
d. gamete
Page 4 of 57 4 Test bank - Human development (Chap 2).pdf