genetics vocabulary

Front

What is a dominant gene?

Back

A dominant gene is a gene that controls a trait and only one copy is needed for the trait to show up in an organism.

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What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as TT or tt.

Front

What is genetics?

Back

Genetics is the science that studies how traits are inherited through the interactions of alleles.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Rr or Ff.

Front

What is a homozygous recessive genotype?

Back

A homozygous recessive genotype consists of two recessive alleles, such as aa or bb.

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What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What is a phenotype?

Back

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

Front

What is a genotype?

Back

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

Front

What is a trait?

Back

A trait is a specific characteristic of an organism, such as eye color or height.

Front

What is a recessive gene?

Back

A recessive gene is a gene that does not show its effect unless two copies are present in the organism.