Page 136 - Science Course 3 (Book 1)

Mo4-L1: Vocabulary Review

Direction: On each line, write the term from the word bank that correctly replaces the underlined words in
each sentence. NOTE: You may need to change a term to its plural form.
dominant trait egg genetics heredity

hybrid recessive trait sperm

1. Mendel used his pea plants to study the passing of traits
from parents to offspring.

2. Mendel’s research is considered to be the foundation of the study of
how traits are passed from parent to offspring.

3. Mendel cross-pollinated pea plants with different forms of the same
trait to produce offspring with two different forms of the same trait.

4. Mendel concluded that the haploid cell formed in a female
reproductive organ contributed one genetic factor for each trait.
5. The other genetic factor for each trait comes from a haploid cell
formed in the male reproductive system.

6. In some cases, one of the factors, such as purple flower color, was the
factor that blocked the other genetic factor.

7. The other factor was the one that is blocked by the presence of the
dominant factor.

Mo4-L1: Key Concept Organizer

Direction: On the line before each definition, write the letter of the term that matches it correctly.
Each term is used only once.

1. the passing of traits from parents to offspring A. self-pollination
B. pistil
2. the study of how traits are passed on
C. pollen carriers
3. when pollen from one plant lands on the pistil of a flower on the D. stamen
same plant
E. heredity
4. when pollen from one plant reaches the pistil of a flower on a F. cross-pollination
different plant
G. true-breeding plant
5. bees, wind, and water
H. observable traits
6. easily noted characteristics I. genetics

7. when offspring are the same as the parent

8. source of pollen

9. receiver of pollen

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