CHECK FOR UNDERSTANDING
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6 Mixed-Up Species
Directions: Match the word(s) in the left column with the correct phrase in the right column.
_____ 1. hybrid
a. classification system for the natural world
_____ 2. infertile
b. the fusion of an egg and a sperm
_____ 3. gene
c. process of cell division that produces an organism’s reproductive cells
_____ 4. genetic diversity
d. earliest stage of an organism’s development
_____ 5. chromosome
e. natural or behavioral factors that prevent separate species
from crossbreeding
_____ 6. meiosis
f. unit of hereditary information
_____ 7. embryo
g. variation among organisms
_____ 8. taxonomy
h. the offspring of two different plant or animal species
_____ 9. fertilization
i. unable to reproduce
_____ 10. breeding barrier
j. rod-shaped structure within cells that carries genetic information
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