Genetics and Heredity Vocabulary Review 2024

Front

What is the number of human chromosomes in each cell?

Back

23 pairs or 46 chromosomes.

Front

What is the molecule that is the base of all chromosomes?

Back

DNA.

Front

What type of trait always shows its effect?

Back

Dominant.

Front

What are long strands of DNA that contain thousands of genes called?

Back

Chromosomes.

Front

What is the term for the passing of traits from parent to offspring?

Back

Heredity.

Front

What is the basic unit of heredity?

Back

Gene.

Front

What is the study of heredity and the variation of inherited characteristics?

Back

Genetics.

Front

What is a trait that is masked by a dominant trait called?

Back

Recessive.

Front

What is the physical expression of a gene called?

Back

Phenotype.

Front

What is the genetic makeup of an organism called?

Back

Genotype.