Physical features such as brown eyes that are passed down are called what?
Traits
TT -->
Genotype?
homozygous dominant
Each box of a Punnett Square represents what?
25% possibility the offspring will get that genotype
How many alleles are needed for one parent in our Punnett squares?
two alleles (RR, rr, Rr)
Using the letter B/b, write the following genotypes:
Homozygous Dominant
Homozygous Recessive
Heterozygous
BB- Homozygous Dominant
bb- Homozygous Recessive
Bb- Heterozygous
Any change to the genetic code is considered a
mutation
These can not be passed on to offspring
Somatic mutations
What is the strong trait that will always show up called?
Dominant Trait
_____________ is the passing of traits from parent to offspring.
Heredity
What goes on the sides of the Punnett Square?
Parent genotypes
In cats, L = long hair and l = short hair. Create a Punnett Square for two short-haired cats.
What is the probability their kitten will be short-haired?
In reindeer, spotted fur is dominant and spotless fur is recessive. What are the possible genotypes for spotted fur? Use F and f,
Ff and FF
In DNA A always pairs with _____ and C always pairs with _____.
T ; G
Where a single nucleotide is removed.
Hint: Two answers required for points
An organism's allele combination is called what?
Genotype
These are two terms used to describe a genotype that has two different alleles for a trait.
Heterozygous or Hybrid
How many possible genotypes are made when we do a Punnett Square?
4
In a Punnett Square crossing two parents that are hybrids for their brown eyes, this is the ratio of the genotypes.
BB 1 : Bb 2: bb 1
In seals, W = long whiskers and w = short whiskers. What is the probability of producing offspring that will have short whiskers in a cross of one homozygous domninant and one heterozygous parent?
0%
What is the complementary DNA sequence for the following genetic code:
ATC
TAG
When a section of a chromosome is flipped around
Inversion
An organism that has two identical alleles for a trait is said to be what?
Homozygous
If a cat is heterozygous for wavy fur, what is the DOMINANT allele?
wavy fur
Complete a Punnett square for the following scenario: A homozygous dominant dad crosses with a homozygous recessive mom. Use N and n to create your Punnett Square.
Get Punnett checked...
Complete a Punnett square for the following scenario:
A heterozygous dad crosses with a homozygous recessive mom. Use R and r.
Get Punnett square checked...
These are two terms used to describe a genotype that has two of the same alleles for a trait.
Homozygous and purebred
This can potentially lead to a change in the structure/shape of a protein
mutation
When all codons after the mutation are affected
Frameshift mutation
When we calculate how LIKELY an offspring will have a specific trait?
Probability
A person with the genotype, rr is said to be ________ __________.
Homozygous Recessive
The F1 generation is ...
the first generation of offspring produced by a set of parents.
Draw a Punnett square, and answer the following question: What is the probability of having a child with blue eyes, when a heterozygous father is crossed with a blue eyed mother? Blue eyes is a recessive trait.
50% blue eyes
50% brown eyes
Draw a Punnett square, and answer the following question: What is the probability of having a child with blue eyes, when a homozygous dominant father is crossed with a blue eyed mother?
blue eyes is recessive.
0% blue eyes
Brown hair is dominant over blonde hair. This is how it is possible for two brown haired parents to have a blonde haired child.
Both parents are carriers of the blonde hair gene or they are heterozygous (hybrid).
______________ read ___________ in the DNA to make proteins.
ribosomes read genes
Where a section of a chromosome is swapped with a section of another chromosome
Translocation