Genetics Vocabulary

Genetics Vocab

Warm-UP

By Chippewa Middle School

​a characteristic an organism gets from its parents

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Trait

A segment of DNA on a chromosome that codes for a specific trait/protein

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Gene

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Multiple Choice

Characteristics passed down from parent to offspring are called

• Species

• Traits

• Gifts

• Talents

All the different types (or forms) of a gene for each variation of a trait of an organism.

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Represented by letters.​

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​Some text here about the topic of discussion.

Allele

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"Stronger" gene allele.

In a pair of alleles, shows their effect even if the individual only has one copy of the allele.​

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(represented by uppercase letters)

​"Weaker" gene allele.

An allele that is masked when a dominant allele is present

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(represented with lowercase letters)

​B

b​

Dominant

Recessive​​

Multiple Choice

What is the name for the "stronger" gene type?

• Recessive

• Allele

• Trait

• Dominant

Multiple Choice

What is the name for the "weaker" gene type?

• Recessive

• Allele

• Trait

• Dominant

An organism that has two gene alleles that are the same for a trait.

​​Homozygous

An organism that has two different gene alleles for a trait

​​Heterozygous

​BB, bb

Bb​

​Because genes come in pairs...

An organism's genetic makeup, or allele combinations.

​​Genotype

An organism's physical appearance, or visible traits.

​​Phenotype

​Aa

Draw

Draw a picture of an organism that would show a phenotype.

Multiple Choice

An organism's genetic makeup, or allele combinations.

• Phenotype

• Stereotype

• Genotype

• DNA type

​In heterozygous genotype the dominant allele completely masks the effect of the recessive allele on the organism's phenotype

Complete Dominance

​A type of inheritance in which two contrasting alleles contribute to the individual a trait not exactly like either parent; blending inheritance.

Incomplete Domance

three or more forms of a gene that code for a single trait

​​Multiple Allele

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A condition in which both alleles for a gene are fully expressed

Codominance

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Multiple Choice

Which type of allele inhertitance is the blending of traits?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

Which type of allele inhertitance is when both allele traits show up?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

Which type of allele inhertitance is when one allele covers or hides a weaker allele?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

Multiple Choice

Which type of allele inhertitance has MORE than two alleles?

• Complete Dominance

• Incomplete Dominance

• Multiple Allele

• Codominance

​A chart or "family tree" that tracks which members of a family have a particular trait

Pedigree

A chart that shows all the possible combinations of alleles that can result from a genetic cross

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Punnett Square​

The likelihood of event will happen.

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"What is the chance of.....?"​

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Probability

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Multiple Choice

The chance that an event will occur is called...

• Allele

• Opportunity

• Risk

• Probability