What is the name of the 20th century geneticist who invented the punnett square?
Reginald Punnett
100
How old is mrs brown?
40
200
The offspring WILL HAVE this trait if it is contributed by one of the parents because it is ....
Dominant
200
_________refers to a genotype consisting of two identical alleles of a gene for a particular trait.
Homozygous
200
A genotype codes for a...
phenotype
200
What does the basic P-square look like?
A window pane.
200
How long has mrs brown been teaching?
13 years
300
A recessive trait is a trait that must be contributed by_______parents in order to appear in the offspring.
both
300
If genes are in pairs in somatic cells and genes contain alleles, what can occur?
Different genetic combinations
300
Genotypes contain...
all of the hereditary information of an individual, even if those genes are not expressed.
300
What does a punnett square help us do?
It helps us find what the probability is of an offspring to have a specific trait.
300
What's her sons name?
Nevyn
400
If you don't have freckles is it recessive or dominant?
Recessive
400
What does heterozygous mean?
It means have two different alleles of a gene for a particular trait (Aa).
400
A phenotype can be determined by...
observation of the individual.
400
What box of the punnett square do you fill out first?
The top-left box.
400
What is her daughters name?
Delaney
500
If your father has a widow's peak and your mother does not, but you are born with one, this is an example of receiving what kind of trait?
Dominant
500
A long tailed male cat and a short tailed female cat had offspring that are 100% heterozygous. What does this mean if we are talking about the length of their tails?
The offspring could be either short-tailed or long-tailed.
500
The phenotype depends upon...
the genotype and the influence of the environment.
500
Two letters in each box.
When you are done filling out a punnett square, you should end up with how many letters in each of the four boxes?