Name _______________________________
Class __________________
Date _______________
Matching On the lines provided, write the letter of the definition of each term.
I __________ 1. genetics
a. likelihood that something will happen
C _________ 2. trait
b. individual whose two alleles are the same
D _________ 3. hybrid
c. specific characteristic
G _________ 4. gene
d. offspring of crosses between parents with different
J __________ 5. allele
e. the idea that only one of two alleles are passed on
F__________ 6. gamete
f. sex cell
A _________ 7. probability
g. factor that determines traits
H _________ 8. Punnett square
h. diagram showing possible gene combinations
E _________ 9. Law of Segregation
i. the scientific study of heredity
B _________ 10. homozygous
j. form of a gene
Completion On the lines provided, complete the following sentences. Use the word bank below to assist
in problems 11-15.
Law of Independent Assortment
11. Organisms that self-pollinate, producing offspring identical to
themselves, are TRUE-BREEDING ________
12. Although organisms with the same physical characteristics have
the same PHENOTYPE ___________ , they might have different
GENOTYPE ____________ , or genetic makeup.
13. According to the principle known as LAW OF INDEPENDENDT ASSORTMENT ,
genes that segregate independently do not influence each other’s inheritance.
14. DOMINANT ____________ alleles “cover up” the expression of ___RECESSIVE_______ alleles
15. A ___HYBRID___________results in the joining of female and male
reproductive cells that contain different forms of a gene.
Multiple Choice On the lines provided, write the letter of the answer that best
completes the sentence or answers the question.
B _________ 16. In what process do male and female reproductive
cells join during sexual reproduction?
a. segregation
c. self-pollination
b. fertilization
d. cross-pollination
Name _______________________________
Class ___________________
Date _______________
D _________ 17. Organisms that have identical alleles for a particular
trait are
a. heterozygous.
c. diploid.
b. polygenic.
d. homozygous.
C _________ 18. An organism such as a pea plant that has an allele for being tall and an
allele for being short is
a. true-breeding.
c. heterozygous.
b. homologous.
d. homozygous.
B _________ 19. Two organisms with the genetic make up of HH
and Hh have the same
a. eggs.
c. sperm
b. phenotype
d. genotype
An individual with the genotype of AaBbCcDd would be
able to produce _____ types of gametes.
a. one
c. four
b. eight
d. sixteen