Genetics & Heredity

The passing of genetic traits from parent to offspring is called

• cross-pollination
• cross-breeding
• heredity
• genetics

The study of Heredity

• science
• genetics
• english
• gene

One of the threadlike structures in the nucleus of a cell that contain directions for the cell's activities

• variation
• pedigree
• DNA
• chromosome

What is a gene?

• DNA compacted and organized into a unit

• A segment of DNA that codes for a specific protein, in turn a specific trait

• One of the threadlike structures in the nucleus of a cell that contain directions for the cell's activities

A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.

• Gene
• Allele
• Codon
• Nucleotide

Different forms of a single gene are called a(n) _________.

• gene
• chromosome
• allele
• genotype

An organism that has two identical (THE SAME) alleles for a trait (purebred)

• homozygous

• heterozygous

An organism that has two different alleles for a trait (hybrid)

• homozygous

• heterozygous

If a gene has dissimilar pairs of alelles for any hereditary characteristic it is called

• homozygous
• heterozygous
• codominant
• dominant

This trait always shows up in an organism when the allele is present

• dominant allele

• codominance

• probability

• recessive allele