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Genetics Vocabulary Quiz: Terms in Context

Practise genetics terms with clear original examples. Check the differences between related words and adapt the exercise for your own lesson.

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Genetics Vocabulary Quiz: Terms in Context example

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Original sample for genetics vocabulary quiz: genetics, gene allele, genotype phenotype, inheritance.

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What is a segment of DNA associated with a trait or function? A ______ can contain instructions for a protein.

geneallelephenotype

Context check: A gene is a DNA segment with a functional role. Complete the sentence: A ______ can contain instructions for a protein.

What is an alternative form of a gene? A person may inherit one ______ from each parent.

Context check: An allele is a version of a gene. Complete the sentence: A person may inherit one ______ from each parent.

What term names an organism’s genetic makeup? The ______ lists the alleles in this example.

Context check: Genotype refers to genetic makeup. Complete the sentence: The ______ lists the alleles in this example.

What term names an observable trait? Eye colour is part of the ______.

Context check: Phenotype is the observable expression. Complete the sentence: Eye colour is part of the ______.

What structure packages DNA? A ______ contains many DNA molecules in a cell.

Context check: Chromosomes package DNA. Complete the sentence: A ______ contains many DNA molecules in a cell.

What molecule stores hereditary information? The sequence is encoded in ______.

DNARNA onlyglucose

Context check: DNA stores the hereditary information in this lesson. Complete the sentence: The sequence is encoded in ______.

What means two matching alleles at a locus? The sample is ______ for the listed allele.

Context check: Homozygous means the two copies match. Complete the sentence: The sample is ______ for the listed allele.

What means two different alleles at a locus? The sample is ______ for the listed gene.

Context check: Heterozygous means the two copies differ. Complete the sentence: The sample is ______ for the listed gene.

What describes an allele expressed in a heterozygote in this model? The ______ allele appears in the example trait.

Context check: Dominant is the term used for this inheritance model. Complete the sentence: The ______ allele appears in the example trait.

What describes an allele masked in a heterozygote in this model? The ______ allele appears when two copies are present.

Context check: Recessive is the term used for this simplified model. Complete the sentence: The ______ allele appears when two copies are present.

Gene/allele and genotype/phenotype are kept as separate pairs; the page does not discuss clinical risk.

Source: Original vocabulary practice material; definitions are checked against the cited public reference. Genetics vocabulary is checked against the National Human Genome Research Institute glossary.

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