Josh
What is heredity?
The passing of traits from one generation to the next
Do you receive both alleles from mom or dad?
Organisms receive one allele from each parent
What does a capital letter represent?
dominant
What does a lowercase letter represent?
recessive
How many pairs of chromosomes do we have?
23 pairs
What are Genetic Traits?
Determine all characteristics about an organism
Include physical and behavioral characteristics
What are punnet squres?
A tool used to determine probability that offspring will express a certain trait
What is a homozygous genotype?
When an organism has two of the same allele (either both dominant or both recessive: BB or bb)
What is a heterozygous genotype?
When an organism has two different alleles (one dominant and one recessive: Bb)
DNA looks like a....
Double helix ladder
What determines genetic traits?
Genes come in pairs called alleles
What is a genotype?
pair of alleles (The genotype come from the genes of an organism)
What is a phenotype?
The phenotype is a physical characteristics
Generally, genetic mutations are harmful or helpful?
Harmful
What is a pedigree?
like a family tree for physical traits.
What are the different types of alleles?
Alleles can be either dominant or recessive
What are some Environment Effects?
Food, shelter,
What is Genetic Engineering?
Using biology and chemistry, science can alter the genes of a cell
Where is the nucleus located?
inside the cell
What is a square?
male
What letters represents dad?
Capital letters
Who discovered genetics?
Gregor Mendel
If an organism is heterozygous for hair color, what genotype may they have?
Bb
What type of traits are not passed down from parent to offspring?
Environmental Traits
29