Genetics Vocabulary Review

Sex chromosomes are

• pairs of chromosomes that determine an individual's biological sex
• pairs of chromosomes that determine an individual's height
• single chromosomes that determine an individual's biological sex
• pairs of chromosomes that determine an individual's eye color

A gene is

• A type of medication
• A type of cell in the body
• A type of virus
• A sequence of DNA that contains the instructions for making a specific protein or set of proteins

Homozygous means

• Having two identical alleles for a particular gene
• Having one allele for a particular gene
• Having no alleles for a particular gene
• Having two different alleles for a particular gene

Heterozygous means...

• Having two different alleles for a particular gene
• Having two identical alleles for a particular gene
• Having three different alleles for a particular gene
• Having no alleles for a particular gene

Dominant allele

• Trait expressed when present with two recessive alleles
• Trait expressed when present with two dominant alleles
• Trait expressed when present with a recessive allele
• Trait expressed when present with a dominant allele

Recessive allele is

• Allele that always shows when present

• Never shows when present

• Only shows when paired with a recessive allele

• Shows when it feels like it

Genotype means

• The number of chromosomes in an organism
• The color of an organism's eyes
• Genetic makeup of an organism
• Type of vitamins in the body

Phenotype means

• The genetic makeup of an organism
• Observable physical or biochemical characteristics of an organism
• The study of fossils
• The process of photosynthesis

Genetics is

• The study of weather patterns
• The study of genes, genetic variation, and heredity in living organisms
• The study of oceanography
• The study of ancient civilizations

Gregor Mendel was

• a professional athlete
• a scientist who is considered the father of genetics

• a scientist who invented the microscope

• a scientist who discovered cells