Recessive Genes
Define recessive gene.
what is a gene that only shows its effect when two copies of it are present—one from each parent?
Define dominant gene
what is a dominant gene is a gene that shows its trait even if only one copy is present.
Who is the father of genetics?
Who is Gregor Mendel?
This is the term for different versions of the same gene.
What are alleles?
A trait is a characteristic passed down from this.
What are parents?
Is this a recessive gene?
b
Yes
is this a dominant gene
R
Yes
What did gregor mendel use to study genetics?
What are pea plants?
These are characteristics, like eye color or height, that are passed from parents to offspring.
What are inherited traits?
Eye color, hair type, and height are all examples of this.
what are genetic traits?
Will the recessive gene be present if there is a dominant gene?
yaurs
Does the dominant gene completely get rid of the recessive gene?
Naur
What are the 3 main types of dominance?
What is co-dominance, incomplete dominance, and complete dominance?
This term describes the physical traits that result from a genotype.
What is a phenotype?
The ABO blood group system in humans is an example of a trait controlled by this many alleles.
What is 3 alleles?
How many out of 4 children will show the recessive gene?
Parent 1: Rr
Parent 2: rr
How many out of the 4 children will be bald if bald is dominant?
Parent 1: rr
Parent 2: Rr
what is 2 children
This square helps predict the probability of inherited traits.
What is a punnett square?
In codominance, both alleles are expressed. What would a flower with red and white alleles look like?
What is red and white spotted?
A person who carries a recessive allele but does not show the trait is called this.
What is the percent chance that the recessive gene will show?
Parent 1: Rrr
Parent 2: RRr
what is 22%
What is the percent chance that the dominant gene will show?
Parent 1: RrRr
Parent 2: RRrr
What is 75%?
A change in the DNA sequence that may lead to a new trait is called this.
What is as mutation?
This is the main reason siblings can have different traits even with the same parents.
What is meiosis?
This factor, along with genes, can influence how traits are expressed (e.g., nutrition affecting height).
What is the environment?