Mendelian Genetics/ Punnett Squares

Front

What is Mendelian Genetics?

Back

Mendelian Genetics is the study of how traits are inherited through generations, based on the principles established by Gregor Mendel.

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

What does the term 'phenotype' refer to?

Back

Phenotype refers to the observable physical characteristics or traits of an organism, such as flower color or hair type.

Front

What does the term 'genotype' refer to?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it carries for a particular trait.

Front

If B = brown hair and b = blonde hair, what is the probability of having brown hair from a Bb x Bb cross?

Back

75%.

Front

In a Punnett Square, what do the letters on the top and side represent?

Back

The letters represent the alleles contributed by each parent.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in the phenotype when present.

Front

What is an example of a homozygous genotype?

Back

AA or aa are examples of homozygous genotypes.

Front

What is an example of a heterozygous genotype?

Back

Aa is an example of a heterozygous genotype.

Front

What is the expected phenotype ratio from a monohybrid cross?

Back

The expected phenotype ratio is typically 3:1 for dominant to recessive traits.