Non-Mendelian Genetics

Front

What is Co-Dominance?

Back

Co-Dominance is a type of inheritance pattern where both alleles in a heterozygous individual contribute equally and visibly to the phenotype. An example is the checkered pattern in chickens when a black chicken is crossed with a white chicken.

Front

What is the phenotype of an organism?

Back

The phenotype is the physical appearance or observable characteristics of an organism, resulting from the interaction of its genotype with the environment.

Front

What genotype codes for blood type O?

Back

The genotype that codes for blood type O is 'ii'.

Front

What is the probability of offspring having type O blood if both parents are heterozygous for type A blood?

Back

The probability is 25%.

Front

What is the percentage of offspring that can inherit blood type O if both parents are type A?

Back

0%.

Front

Define incomplete dominance.

Back

Incomplete dominance is 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.

Front

What is a polygenic trait?

Back

A polygenic trait is a characteristic that is influenced by multiple genes, leading to a continuous range of phenotypes, such as height or skin color.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits or characteristics.

Front

What is a blocked trait?

Back

A blocked trait is not a standard term in genetics; it may refer to traits that are not expressed due to the presence of dominant alleles.

Front

What is the significance of blood type alleles I^A, I^B, and i?

Back

I^A and I^B are co-dominant alleles that determine blood types A and B, while 'i' is recessive and determines blood type O.