Introduction to Genetics

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What is a recessive trait?

Back

A recessive trait is an allele trait that can be hidden by the presence of another allele.

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What are genes?

Back

Genes are factors (sections of DNA) that control traits and are passed from one generation to the next.

Front

What is a genotype?

Back

A genotype is an organism's genetic makeup, usually expressed in letters.

Front

What are haploid cells?

Back

Haploid cells are cells that have only one allele for a trait, meaning they only have one copy of each chromosome.

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What does Mendel's law of segregation state?

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Mendel's law of segregation states that during meiosis, the alleles that control each trait are separated and only one allele from each pair is passed on to the offspring.

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What is a dominant trait?

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A dominant trait is an allele trait that can mask the presence of a recessive trait.

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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 its genotype.

Front

What is the difference between haploid and diploid cells?

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Haploid cells have one set of chromosomes, while diploid cells have two sets of chromosomes.

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What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

Front

What is the role of nucleotides in genetics?

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Nucleotides are the building blocks of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base.