Page 196 - Science Course 3 (Book 1)

Mo5-L1: Lesson Review Quiz (True or False)

Direction: On the line before each question or statement, write T if the statement is true or F if the
statement is false. If the statement is false, change the underlined word(s) to make it true.
Write your changes on the lines provided.

1. Genes are sections of DNA that contain information about a specific trait.

2. In sexual reproduction, one organism makes a copy of its genes and itself.

3. Selective breeding is the selection and breeding of organisms for desired traits.

4. A gene with different information for a trait is called an allele.

Mo5-L1: Lesson Review Quiz (Matching)

Direction: On each line, write the term from the word bank that correctly completes each sentence.
Each term is used only once.

dominant trait genotype heterozygous homozygous phenotype

5. The alleles of all the genes on an organism’s chromosomes make up its .

6. An organism with two identical alleles for a trait is .

7. The way the traits of an organism appear, or are expressed, is its .

8. An organism that has two different alleles for a trait is .

9. A is a genetic factor that blocks another genetic factor.

Direction: Respond to each statement on the lines provided

1. Define gene. Use the terms DNA and trait in your response.

2. Contrast sexual and asexual reproduction.

3. State how people use selective breeding.

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