Mendelian Genetics

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What is Mendelian Genetics?

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Mendelian Genetics is the study of how traits are inherited through generations, based on the principles established by Gregor Mendel.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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What is a dominant trait?

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A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present.

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What is a recessive trait?

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A recessive trait is a genetic trait that is only expressed in the phenotype when two copies of the allele are present.

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What does homozygous mean?

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Homozygous refers to having two identical alleles for a particular gene, either dominant (e.g., RR) or recessive (e.g., rr).

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What does heterozygous mean?

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Heterozygous refers to having two different alleles for a particular gene (e.g., Rr).

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What is a Punnett square?

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A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the phenotypic ratio of a dihybrid cross?

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The phenotypic ratio of a dihybrid cross between two heterozygous parents is 9:3:3:1.

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What is a genotype?

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A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Tags

NGSS.HS-LS3-2

Front

What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the significance of the F1 generation?

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The F1 generation is the first generation of offspring produced from a cross of two parental (P) organisms.