Mendelian Genetics Concepts

Front

What is an allele?

Back

An allele is one of the two forms of a gene, represented by letters such as 'T' or 't'.

Front

What does the Law of Segregation state?

Back

The Law of Segregation states that alleles must separate when gametes are formed.

Front

What is a hybrid in genetics?

Back

A hybrid is an organism that carries both a dominant and a recessive allele for the same trait.

Front

What is a trait?

Back

A trait is an observable characteristic of an organism.

Front

What is a phenotype?

Back

A phenotype is the physical appearance of an organism, such as being black-haired or blue-eyed.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, representing the alleles it carries.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles are expressed in the phenotype even when only one copy is present, while recessive alleles are expressed only when two copies are present.

Front

What is a homozygous genotype?

Back

A homozygous genotype has two identical alleles for a trait, such as 'TT' or 'tt'.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a trait, such as 'Tt'.

Front

What is the purpose of a Punnett square?

Back

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