Activity 4: Breeding Corn

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Last updated 10:21 PM on 6/14/26
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14 Terms

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monohybrid cross

a cross in which only one characteristic is tracked

<p>a cross in which only one characteristic is tracked</p>
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Allele

Different forms of a gene

<p>Different forms of a gene</p>
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Gene

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

<p>A segment of DNA on a chromosome that codes for a specific trait</p>
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Trait

specific characteristic of an individual, such as hair color or flower color

<p>specific characteristic of an individual, such as hair color or flower color</p>
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test cross

the crossing of an individual of unknown genotype with a homozygous recessive individual to determine the unknown genotype

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dominant allele

An allele whose trait always shows up in the organism when the allele is present.

<p>An allele whose trait always shows up in the organism when the allele is present.</p>
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recessive allele

An allele that is masked when a dominant allele is present

<p>An allele that is masked when a dominant allele is present</p>
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Homozygous

An organism that has two identical alleles for a trait

<p>An organism that has two identical alleles for a trait</p>
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Heterozygous

An organism that has two different alleles for a trait

<p>An organism that has two different alleles for a trait</p>
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Phenotype

An organism's physical appearance, or visible traits.

<p>An organism's physical appearance, or visible traits.</p>
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Genotype

An organism's genetic makeup, or allele combinations.

<p>An organism's genetic makeup, or allele combinations.</p>
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punnett square

diagram showing the gene combinations that might result from a genetic cross

<p>diagram showing the gene combinations that might result from a genetic cross</p>
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sexual reproduction

Two parents

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selective breeding

The process of selecting a few organisms with desired traits to serve as parents of the next generation