Genetics 1
Genes code for these -physical characteristics or ...
Traits
This kind of gene always shows itself over a recessive gene.
Dominant Gene
The language you speak is influenced mostly by...
the environment you grow up in
a random change in an organism’s DNA
mutation
In DNA, C bonds to ....
G
The passing of traits from parent to offspring is called.
Heredity
Organisms that have two of the same genes are called...
Homozygous
Type of reproduction where offspring are identical to the parents
Asexual
An organisms physical appearance, such as having a round nose
Phenotype
If a trait is recessive, an organism must have this many recessive alleles to show it.
What is two?
Chromosomes are made up of _______.
DNA
Organisms that have two different genes for the same trait are called...
heterozygous
One of two or more forms of a particular gene (the options for a gene).
Allele
The two letter code that describes an organisms genes. (AA or Aa)
Genotype
The P generation stands for this
What is Parent Generation?
Where are chromosomes located?
Nucleus
A tool scientists use to predict what offspring may look like...
Punnett Square
Gene that is hidden when the dominant gene is present
Recessive
Father of Genetics, studied peas
A cross between TT and tt will produce offspring with this genotype.
What is Tt?
Having Freckles (F) is dominant over not having Freckles (f). If a person who is heterozygous has children with a person who is also homozygous recessive, what is the probability that their children will have Freckles?
50%
Right-handedness (R) is dominant over left-handedness (r). If a person who is heterozygous has children with a person who is also heterozygous, what would be their children’s possible genotypes?
RR, Rr, rr
These are sections of DNA that determine traits like eye color or height.
What are genes?
If one parent is BB and the other is bb, the offspring will all have this genotype.
What is Bb?
If one parent is homozygous dominant (BB) and the other is heterozygous (Bb), this percentage of offspring will show the dominant trait.
What is 100%?