Mendel's genetics for 7MTh

Front

What is a dominant allele?

Back

A dominant allele is an allele that shows up in the physical appearance of an organism, even if only one copy is present in a heterozygous genotype.

Front

What is a recessive allele?

Back

A recessive allele is an allele that does not show up in the physical appearance of an organism unless two copies are present in a homozygous genotype.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as 'gg' or 'BB'.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as 'Bb'.

Front

How are dominant alleles represented?

Back

Dominant alleles are represented by a capital letter.

Front

How are recessive alleles represented?

Back

Recessive alleles are represented by a lowercase letter.

Front

How many alleles does an organism carry for a trait?

Back

An organism carries 2 alleles for each trait, one from each parent.

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 phenotype?

Back

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

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.