Mendelian & Nonmendelian Genetics

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What type of inheritance pattern does sickle cell anemia follow?

Back

Sickle cell anemia follows a sex-linked inheritance pattern.

Front

What is codominance in genetics?

Back

Codominance is a non-Mendelian inheritance pattern where both traits are fully expressed in the organism, and neither trait is masked.

Front

In a genetic cross, if red is dominant to blue, what fraction of offspring would be blue if both parents are heterozygous?

Back

1/4 of the offspring would be blue.

Front

What is the genotype of a homozygous dominant individual?

Back

The genotype of a homozygous dominant individual is represented as 'AA'.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic constitution of an organism, while phenotype refers to the observable traits.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype.

Front

What are polygenic traits?

Back

Polygenic traits are traits that are controlled by multiple genes, leading to a wide range of phenotypes.

Front

What is a Punnett square used for?

Back

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

Front

What does it mean for a trait to be sex-linked?

Back

A sex-linked trait is one that is associated with a gene that is carried on a sex chromosome, often the X chromosome.