Genetics

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What is a Chromosome?

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A threadlike structure found in the nucleus of most living cells, carrying genetic information in the form of genes.

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NGSS.HS-LS3-1

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What is a gene?

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A small part of DNA found in a chromosome that gives our body instructions to build for a specific trait that we have.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

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How many mutations does the average person have in their DNA that didn't exist in either their father or mother?

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60.

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NGSS.HS-LS3-2

Front

Which trait will not likely be influenced by the environment?

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Our Eye Color.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

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What is a trait?

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Traits are the physical things that make us look the way we do; they may influence how we behave, and also our talents, abilities, and disease risks.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

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What is DNA?

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DNA (deoxyribonucleic acid) is the molecule that carries the genetic instructions for life.

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What is the role of alleles in genetics?

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Alleles are different versions of a gene that determine specific traits.

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What is the difference between dominant and recessive traits?

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Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.

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What is genetic variation?

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Genetic variation refers to the differences in DNA sequences among individuals, which can lead to different traits.

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NGSS.HS-LS3-2

NGSS.HS-LS4-2

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What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.