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What is the passing of characteristics from parents to offspring called? Heredity
What is the passing of characteristics from parents to offspring called?
Heredity
The science of heredity and the process by which traits are passed from parents to offspring?
Genetics
What is the F1 generation?
The offspring of the P generation
What are the 1st two individuals in a cross known as …
P generation
What does a Punnett Square predict?
The possible outcomesOf a genetic cross
What are the different versions of a gene called?
Alleles
DD
dd
HOMOZYGOUS OR HETEROZYGOUS?
Ff
FFff
Explain what the word heterozygous means
“Different”2 different letters (Dd)
Capt. Jack Sparrow’s “weird” way in running is a homozygous trait ( r ) that only certain pirates possess. If Jack Sparrow decides to marry another female pirate who is heterozygous for normal running, what would be the genotypes of their potential offspring?
R = red hairr = brown hair
If a person has the genotype rr, what is their phenotype and why?
Phenotype: brown hairBoth recessive alleles
Are present so they will Express the recessive trait
“Alleles of different genes separate independently of one another during gamete formation”
TheLaw of Independent
Assortment
What does the word phenotype mean?
“Physical” AppearanceOf a genetic trait
A word that describes when you have two of the same allele…
Homozygous
S s
S
S
SS Ss
SS Ss
In goblin sharks the ability to extend their jaw past their body is dominant. If a heterozygous dominant shark mates with another heterozygous shark, how many of their offspring will not be able to extend their jaws.
What is the law that states that two alleles separate when gametes are formed?
The Law of Segregation
n
N
n n
NnNn
n n n n
What is the genotypic ratio?
What is the phenotypic ratio?
N= nine toesn = ten toes
How could you find the genotype of an individual that is unknown?
Test Cross
Mimicking noises is a dominant trait for the Lyrebird. The recessive condition makes it so the bird is not able to mimic any noises.
A mimicking male bird and a non-mimicking female bird are crossed, however you do not know the exact genotype of the mimicking male bird. Show ALL the Punnett squares which could represent this cross.
