Name: ______________________________________________________ Period: __________ Date: ________
Review Quiz – Genetics and Evolution
1. A structure that carries a single unit of hereditary
information is a
(1) gene
(2) tissue
(3) sex cell
(4) pedigree chart
2. A Punnett square is shown below. The dominant
trait is represented by R. The recessive trait is
represented by r.
6. What are genes composed of?
(1) offspring
(2) DNA
7. An organism is born with a genetic abnormality
not present in any of its ancestors. This
abnormality is most likely the result of
(1) circulation
(2) competition
What percentage of the offspring will most
likely show the dominant trait?
(1) 25%
(2) 50%
(3) cells
(4) traits
(3) mutation
(4) respiration
Base your answers to questions 8 and 9 on the
diagram below and on your knowledge of science.
The diagram shows how modern types of flowers
developed from early types of flowers over the last
75 million years.
(3) 75%
(4) 100%
3. Naturally occurring variations within a species
are mainly the result of mutations and
(1) sexual reproduction
(2) dynamic equilibrium
(3) metabolism
(4) camouflage
4. The diagram below shows a population of adult
giraffes over time. Letters A, B, and C represent
three time periods.
Which process does this diagram best represent?
(1) ecological succession (3) natural selection
(2) genetic engineering (4) asexual reproduction
5. What model is used to show the pattern of traits
that are passed from one generation to the next in a
family?
(1) pedigree chart
(3) energy pyramid
(2) dichotomous key (4) line graph
8. What is the most likely reason why these early
flowers gradually changed to many different types of
flowers over time?
(1) The flowers’ traits were genetically
engineered.
(2) The environments of the flowers stayed
the same.
(3) The genetic material of the flowers stayed
the same.
(4) The flowers adapted to environmental
conditions.
9. Which process is represented in this diagram?
(1) evolution (3) selective breeding
(2) photosynthesis (4) ecological succession
10. The chart below shows the inferred evolution of
some dinosaurs during three time periods in Earth’s
history.
Base your answers to questions 13 and 14 on the
information below and on your knowledge of science.
In pea plants, the green-pod gene (G) is dominant
over the yellow-pod gene (g).
13.
a. Two pea plants with green pods, Gg × GG,
were crossed. Complete the Punnett square
below to show the results of this cross.
Which dinosaur most likely evolved from
Coelophysis?
(1) Theodont
(2) Tyrannosaurus
(3) Triceratops
(4) Camptosaurus
11. When the environment changes more quickly
than a species can adapt, the species may become
(1) extinct
(3) diverse
(2) dominant (4) overpopulated
12. The drawing below represents a pair of
chromosomes.
b. What percentage of the offspring produced
by this cross will most likely have green
pods?
__________________ %
14. Show the genetic makeup of two parent pea
plants whose offspring would all have yellow pods.
___________ × ___________
Base your answers to 15 & 16 on the information below.
Pea plants can produce round or wrinkled peas. The
genes for round and wrinkled peas are:
R = round (dominant)
r = wrinkled (recessive)
The area labeled “bands” shows the location of
15. Complete the Punnett Square below, which
shows a cross between a hybrid round-pea plant (Rr)
and a wrinkled-pea plant (rr).
(1) egg cells
(2) sperm cells
(3) reproductive hormones
(4) specific genes
16. What percentage of the offspring were
Round = _____________
Wrinkled = _____________