Genetics unit 3

Front

What are "Chromosomes"?

Back

A rod-shaped cellular structure made of condensed chromatin; contains DNA, which carries the genetic information that controls inherited characteristics such as eye color and blood type.

Front

How are cells created by meiosis different from body cells?

Back

They contain half of the chromosomes.

Front

DNA is passed from parent to offspring. True or False?

Back

True.

Front

What are "Dominant Alleles"?

Back

An allele whose trait always shows up in the organism when the allele is present. Represented by a capital letter.

Front

What is the shape of DNA described as?

Back

Double helix.

Front

What are "Recessive Alleles"?

Back

An allele whose trait is masked in the presence of a dominant allele. Represented by a lowercase letter.

Front

What is the function of DNA?

Back

To store and transmit genetic information.

Front

What is a gene?

Back

A segment of DNA on a chromosome that codes for a specific trait.

Front

What is the difference between genotype and phenotype?

Back

Genotype is an organism's genetic makeup, while phenotype is the organism's physical appearance.

Front

What is meiosis?

Back

A type of cell division that reduces the chromosome number by half, creating four haploid cells.