Download LEARNING ACTIVITY 2.3 Matching: Patterns of Genetic Inheritance

LEARNING ACTIVITY 2.3
Matching: Patterns of Genetic Inheritance (pp. 56–60)
Directions: Match each of the following terms with its definition.
Terms:
1. Allele
2. Homozygous
3. Heterozygous
4. Dominant-recessive inheritance
5. Carriers
6. Incomplete dominance
7. X-linked inheritance
8. Genetic imprinting
9. Mutation
10. Polygenic inheritance
Definitions:
A. Traits in which many genes influence the characteristics in question.
B. Alleles are imprinted, or chemically marked, in such a way that one
member of the pair is activated, regardless of its makeup.
C. Refers to each form of a gene.
D. When heterozygous individuals with just one recessive allele can pass that
trait to their children.
E. A pattern of inheritance in which both alleles are expressed, resulting in a
combined trait, or one that is intermediate between the two.
F. If the alleles from both parents are alike, the child will display the
inherited trait.
G. In many heterozygous pairings, only one allele affects the child’s
characteristics. It is called dominant; the second allele, which has no effect,
is called recessive.
H. A sudden change in a segment of DNA.
I. If the alleles differ, the relationships between the alleles determine the trait
that will appear.
J. When a harmful allele is carried on the X chromosome.