Genetics Flashcard

Front

What is a heterozygous genotype?

Back

A genotype consisting of two different alleles for a particular gene, such as Bb.

Front

What is a homozygous genotype?

Back

A genotype consisting of two identical alleles for a particular gene, such as BB or bb.

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is a genotype?

Back

The genetic constitution of an individual, represented by the alleles inherited from the parents.

Front

What does it mean for an organism to be homozygous for a trait?

Back

It means that the organism has two identical alleles for that trait.

Front

What does it mean for an organism to be heterozygous for a trait?

Back

It means that the organism has two different alleles for that trait.

Front

What is the principle of segregation in genetics?

Back

The principle stating that during the formation of gametes, the two alleles for a trait separate from each other.

Front

What is the probability of obtaining a Bb genotype from a Bb and bb cross?

Back

50%.

Front

What is the role of diversity in evolution?

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Diversity increases the chances of survival and adaptation of species in changing environments.

Front

What is a dominant allele?

Back

An allele that expresses its phenotype even in the presence of a recessive allele.