Genetics

Front

What part of an organism's genetic makeup is received from its father?

Back

50% of an organism's genetic makeup is inherited from its father.

Front

True or False: In humans, skin color and weight are partly determined by multiple alleles.

Back

True. Skin color and weight are influenced by multiple alleles.

Front

What is heredity?

Back

Heredity is the passing of traits from parents to offspring.

Front

What part or parts of a chromosome are made up of DNA?

Back

A chromosome is made up of DNA in all its parts.

Front

How can two parents with brown eyes have a child with blue eyes?

Back

The parents may both have recessive genes for blue eyes.

Front

What is a gene?

Back

A gene is a segment of DNA that determines a specific trait.

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist for a particular trait.

Front

What is a dominant allele?

Back

A dominant allele is one that expresses its trait even if only one copy is present.

Front

What is a recessive allele?

Back

A recessive allele only expresses its trait if two copies are present.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism.