Introduction to Genetics
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. heredity
A. A segment of DNA that is involved in producing a polypeptide chain
2. genetics
B. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
3. trait
C. Either of a pair of alternative forms of a gene that can occupy the same locus on a particular
4. hybrid
D. An organism that is the offspring of genetically dissimilar parents or stock
5. gene
E. The biological process whereby genetic factors are transmitted from one generation to the next
6. allele
F. An organism or cell having the normal amount of DNA per cell
7. dominant
G. The branch of biology that studies heredity and variation in organisms
8. recessive
H. Understatement for rhetorical effect
9. phenotype
I. The separation of paired alleles during meiosis so that members of each pair of alleles appear
10. genotype
J. An organism or cell having only one complete set of chromosomes
11. homozygous
K. What an organism looks like as a consequence of the interaction of its genotype and the environment
12. heterozygous
L. Having dissimilar alleles at corresponding chromosomal loci
13. segregation
M. Of or relating to an inheritable character that is controlled by several genes at once
14. haploid
N. A distinguishing feature of your personal nature
15. diploid
O. Not complete or total
16. meiosis
P. The fifth note of the diatonic scale
17. crossing over
Q. An allele that produces its characteristic phenotype only when its paired allele is identical
18. incomplete
R. A group of organisms sharing a specific genetic constitution
19. polygenic
S. Having identical alleles at corresponding chromosomal loci