Question

genetics concepts worksheet
objective:
this worksheet will help students differentiate between key genetics concepts, including
genotype vs. phenotype, dominant vs. recessive, heterozygous vs. homozygous, and types of
dominance.

part 1: key term definitions
fill in the blanks with the correct term from the word bank.
word bank: genotype, phenotype, dominant, recessive, homozygous, heterozygous,
complete dominance, incomplete dominance, codominance

1. the genetic makeup of an organism is called its __________.

1. the physical expression of a trait is known as the __________.

1. a trait that always shows when present is called __________.

1. a trait that is masked unless both alleles are the same is __________.

1. an organism with two identical alleles for a trait is __________.

1. an organism with two different alleles for a trait is __________.

1. in __________, the dominant allele completely masks the recessive allele.

1. in __________, the heterozygous phenotype is a blend of both alleles.

1. in __________, both alleles are fully expressed in a heterozygous individual.

part 2: genotype vs. phenotype
identify whether the following are genotypes (g) or phenotypes (p).

1. brown eyes (_____)

1. bb (_____)

1. tt (_____)

1. tall plant (_____)

1. white fur (_____)

1. rr (_____)

Explanation:

Part 1 defines core genetics terms using the provided word bank, matching each definition to the correct genetic term. Part 2 distinguishes between genotypes (genetic codes) and phenotypes (physical traits).

Answer:

Part 1: Key Term Definitions

1. Genotype
2. Phenotype
3. Dominant
4. Recessive
5. Homozygous
6. Heterozygous
7. Complete Dominance
8. Incomplete Dominance
9. Codominance

Part 2: Genotype vs. Phenotype

1. P
2. G
3. G
4. P
5. P
6. G