ESSENTIAL KNOWLEDGE: DNA & ALLELES

Within this section, the learner will:

Describe the structure of DNA
Describe how dominant and recessive alleles determine which traits organisms exhibit

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Use your knowledge of cells and DNA to complete the concept map

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Box 2

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Choose the statement that correctly describes the forms alleles may take on a chromosome.

Both alleles in a gene pair may be recessive

Gene pairs may contain one dominant and one recessive allele

Both alleles in a gene pair may be dominant

All of the above are true

Read the description for common traits in the data table.

Determine your phenotype and possible genotype. Heterozygous alleles make it impossible to know your exact genotype for a dominant trait.
Type your answers into the following input field(s). Type the phenotype then add a comma followed by the genotype. Your answer should look like this: phenotype, genotype

Facial Dimples

Bent little finger

Eye Color

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ESSENTIAL KNOWLEDGE: DNA & ALLELES

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