Functions
Function of Traits
Passing down genetic information
How many pairs of chromosomes do humans typically have
23
If a trait is dominant, it means:
It only needs one copy of the allele to be expressed
genetic mutation
A change in the DNA sequence
What is the largest planet in our solar system?
Jupiter
Function Of DNA
Storing information, passing down information, making proteins
If both parents have brown eyes (Bb) what is the probability of their child having blue eyes (bb)?
25%
A trait that is only expressed when two copies of its allele are present.
Recessive Trait
homozygous
Having two identical alleles for a trait
In which year did Christopher Columbus first reach the Americas?
1492
function of genes
They carry instructions for making proteins
What is the term for different versions of the same gene
Alleles
True or False
Dominant always means "better" or "stronger"
False
Punnett Square
A diagram used to predict the possible genetic outcomes of a cross between two parents.
What is the chemical symbol for gold?
Au
Function of Punnett Square
Diagram potential phenotypes in offspring
In a Punnett square for eye color what does Bb represent?
Brown Eyes
A trait in nature that can give an advantage is known as a
advantageous trait
genetic diversity
The variety of alleles in a population
Which famous scientist developed the theory of relativity?
Albert Einstein
Function of Mutation
To change DNA in a way to help or hurt an organism
Two brown-eyed parents have a blue-eyed child. Which of the following statements best explains this situation?
A) The blue-eyed trait skipped a generation
B) One parent must have a hidden gene for blue eyes
C) Both parents must have a hidden gene for blue eyes
D) The child's eye color will change to brown as they grow older
c
What is the difference between genotype and phenotype
Genotype is genetic makeup, phenotype is physical appearance
codominance
When neither allele is dominant and both are expressed
What is the capital city of Australia?
Canberra