The Basics
The ones that pass on their genes through reproduction.
What are PARENTS
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
What is a 25% chance of having a blue eyed bab?.
The factors that control a trait; a piece of DNA
What is GENES
An organism's genetic makeup, or allele combinations
What is GENOTYPE
The genetic material that carries information about an organism and is passed from parent to offspring
What is DNA (Deoxyribonucleic acid)
Different characteristics we can observe such as hair color and height are called ...
What is a TRAIT
An organism with TWO different alleles for a trait
What is a HYBRID/HETEROZYGOUS
An organism's traits are controlled by the ________ it inherits from its parents, determined by genes.
What are ALLELES
An organism that has two identical alleles for a trait is said to be ___________
What is HOMOZYGOUS
A doubled rod of condensed chromatin that contains the DNA of an organism
What is a CHROMOSOME
The scientific study of heredity is called ...
What is GENETICS
A recessive allele is represented by a __________ letter, while dominant allele is represented by a __________ letter.
What is LOWERCASE and UPPERCASE
Allele whose trait always shows up in the organism when the allele is present
What is a DOMINANT ALLELE
An organism that has two different alleles for a trait is said to be ______________
What is HETEROZYGOUS
The hidden form of an inherited trait
What is a recessive trait?
A tool that can help you understand how the laws of probability apply to genetics
What is a PUNNETT SQUARE
If we cross two homozygous dominant parents, how many offspring would you expect to be heterozygous.
What is ZERO
Allele whose trait is always hidden whenever the allele is present
What is a RECESSIVE ALLELE
An organism's physical appearance, or visible traits
What is PHENOTYPE
The term that refers to passing genetics from one generation to the next.
What is heredity?
Sometimes you have traits that aren't inherited from your parents, these are called _______ traits.
What is ACQUIRED
If we cross two heterozygous parents, how many offspring would you expect to also be heterozygous?
What is 2/4 or 50%
If we cross a heterozygous parent, and a homozygous recessive parent, how many offspring will express the dominant trait?
2/4 or 50%
Brown hair (B) is dominant to blonde hair (b). How many offspring would you expect to have brown hair in a cross between 1 homozygous dominant and 1 homozygous recessive parent.
4/4 OR 100%
The type of dominance that occurs when a red flower crosses with a white flower, and its offspring is pink.
What is INCOMPLETE DOMINANCE