Download Name_______________________________________________

Name_______________________________________________ Date_____________________ Hour_____ Table#_____
Answer each of the following questions. On the line
before the number of the question record the page
number where you found the answer.
________1. A complete Punnett Square shows
A. Only genotypes of parents and offspring
B. How an offspring’s allele’s might combine
C. Only the dominant alleles in parents and
offspring
D. Genotypes and phenotypes of parents of
offspring
If the statement is true, write “true” on the line. If it is
false, change the underlined word or words to make it
true. (Write either true or the words to make the
statement true. Do not write false.)
5. The daughter cells formed as the result of mitosis are
2n cells.
_____________________________________________
_____________________________________________
6. A gamete contains twice the usual number of
chromosomes.
_____________________________________________
________ 2. A poodle with black fur (BB) is crossed with
a poodle with brown fur (bb). What is the probability
that the offspring will be black?
A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent
________3. An organism with the genotype Dd is
crossed with an organism with the same genotype.
What is the ratio of offspring displaying the dominant
allele to offspring displaying the recessive allele?
A.
B.
C.
D.
1:1
1:2
3:1
4:1
_____________________________________________
7. Meiosis produces daughter cells that are haploid.
_____________________________________________
_____________________________________________
8. All cells go through meiosis.
_____________________________________________
_____________________________________________
9. DNA is always copied before meiosis II begins.
_____________________________________________
_____________________________________________
________ 4. A ratio that compares a number to 100 is
a(n)
A.
B.
C.
D.
Percentage
Probability
Punnett number
Prediction
10. Eggs form in the reproductive organs of a female.
_____________________________________________
_____________________________________________
11. Meiosis takes place when an egg and sperm
combine to form a new cell.
_____________________________________________
_____________________________________________
Name_______________________________________________ Date_____________________ Hour_____ Table#_____
Analyzing Data
Use the data in the chart to answer questions 38-43.
The chart below shows the phenotype of pea-plant
offspring.
Phenotypes of Pea Plants
Phenotype
Number of Offspring
Regular (D)
12
Dwarf(d)
4
12. What percentage of pea plants showed the
dominant phenotype?
A.
B.
C.
D.
100 percent
75 percent
50 percent
25 percent
13. What percentage of pea plants showed the
recessive phenotype?
A.
B.
C.
D.
100 percent
75 percent
50 percent
25 percent
14. What is the genotype of the dwarf pea plant?
A.
B.
C.
D.
DD
Dd
dd
cannot tell
15. What are the possible genotypes of the regular pea
plants?
A.
B.
C.
D.
DD and dd
DD and Dd
Dd and dd
Cannot tell
16. What are the genotypes of the parents.
A. Dd and dd
B. DD and Dd
C. Dd and Dd
D. dd and dd
17. Which statement is true, based on the data in the
chart?
A. If both parents were Dd, then none of the
offspring would be dwarf.
B. If both parents were DD, then none of the
offspring would be dwarf.
C. If one parent were Dd and the other were dd,
then none of the offspring would be regular.
D. If one parent were DD and the other parent
were dd, then none of the offspring would be
regular.
Name_______________________________________________ Date_____________________ Hour_____ Table#_____
ACROSS
3 The actual characteristics an organism has.
5 A gamete that forms in the reproductive organs of a
male.
7 The allele that is expressed in the phenotype even if it
is the only copy present in the genotype.
10 When a sperm and egg combine to form one new cell.
11 A special kind of cell division that produces haploid
cells.
12 A ratio that compares a number to 100.
14 A unit of heredity that occupies a specific location on
a chromosome and codes for a particular product.
15 A gamete that forms in the reproductive organs of a
female.
16 Cells that contain half the usual number of
chromosomes—one chromosome from each pair.
DOWN
1 The genes an organism has, or its genetic
constitution.
2 The passing of genes from parents to offspring.
4 Illustrates how the parents’ alleles might combine in
offspring. (two words)
5 The process in which a cell containing genetic
information from the mother and a cell containing
genetic information from the father combine into a
completely new cell, which becomes the offspring
(two words)
6 Compares or shows the relationship between two
quantities.
8 The likelihood of a specific outcome in relation to the
total number of possible outcomes.
9 The allele that is expressed in the phenotype when
two copies of it are present on the homologs.
13 The various forms of the same gene.