Grade 7 Patterns of Inheritance Worksheet
Explore the fundamental concepts of heredity, genes, alleles, and Mendelian inheritance patterns in this Grade 7 science worksheet.
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Patterns of Inheritance
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Read each question carefully and answer to the best of your ability. Good luck!
1. What is the basic unit of heredity that determines a trait?
Chromosome
Gene
Protein
Cell
2. An allele is:
A type of cell
A different form of a gene
A segment of protein
A process of inheritance
3. The passing of traits from parents to offspring is called .
4. Organisms that have two identical alleles for a particular trait are said to be for that trait.
5. A dominant allele will always express its trait if it is present.
True
False
6. Recessive alleles are only expressed when two copies are present.
True
False
7. Briefly describe the structure of DNA and its role in heredity.
Match the term on the left with its definition on the right.
8. Genotype
a. The observable physical properties of an organism
9. Phenotype
b. The genetic makeup of an organism
10. Homozygous
c. Having two different alleles for a trait
11. Heterozygous
d. Having two identical alleles for a trait