Genetics and Heredity Brainpop

The inherited traits of an organism are determined by

• leukocytes

• cytoplasms

• genes

• enzymes

The passing of traits from parents to offspring is known as

• Generation

• Heredity

• Inheritance

• DNA

What model is used to predict possible outcomes of offspring based on the genes of the parents?

• punnett square

• periodic table

• dihybrid cross

• T-chart

A gene is 

• An entire chromosome that  codes for a trait
• a piece of clothing
• a piece of a DNA on a chromosome that codes for a trait
• Chemical messengers in your brain that code for a trait

In which organelle is DNA usually found ?

• cell membrane

• vacuole

• chloroplast

• nucleus

A trait that is ALWAYS present and prevents other traits from being expressed is a ________________________

• recessive trait

• aggressive trait

• absent trait

• dominant trait

Which of the following represents a heterozygous genotype?

• RR

• ST

• Ss

• TT

Which of the following represents a homozygous genotype?

• Rr

• PS

• PP

• Pp

Each genotype has two forms of the same trait known as

• chromosomes

• alleles

• DNA

• phenotypes

Humans have _____________________pairs of chromosomes containing all genetic information

• 10

• 15

• 18

• 23