Bio Unit 7: Q2 Punnett Squares and Complex Genetics

Front

What is Incomplete Dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two traits.

Front

What is Co-dominance?

Back

A genetic situation where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits simultaneously.

Front

What is a Mendelian cross?

Back

A genetic cross that follows the principles established by Gregor Mendel, typically involving dominant and recessive alleles.

Front

What is a genotype?

Back

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

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 the significance of the Punnett Square?

Back

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

Front

If two black chickens (genotype bb) mate, what is the chance of having blue (Bb, BB) chickens?

Back

No chance.

Front

What is the probability of offspring showing a dominant trait if both parents are homozygous dominant?

Back

100%.

Front

If a child has type O blood, which blood type could their parents NOT have?

Back

AB.

Front

What is the difference between a dominant and a recessive allele?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous genotype.