11 questions
What does a punnet square show us?
The age of the offspring
The chance of a genotype (trait) showing up in offspring
Numbers
Blue eyes
Which set of traits goes at the top of the punnet square?
Father
Mother
Dominant
Recessive
Genotypes are:
Green
Dominant only
Recessive only
traits that appear in offspring
Which is Heterozygous?
Tt
BB
ff
Dominant
Which is homozygeous?
Tt
BB
Ff
Blue
What are the chances that the offspring will have homozygous recessive traits?
1 in 4
3 out of 4
75%
50%
What are the chances of heterozygous genotypes in offspring?
50%
25%
1 in 4
75%
What is the dominant trait here?
Bb
Recessive eyes
Blue eyes
Brown eyes
If the father's genotypes are SS and the mothers are ss, the offspring will have:
All Ss
Half will be SS, half ss
Mostly SS
Only recessive genes
A recessive genotype will show when:
The offspring have both dominant and recessive genotypes
The offspring has two recessive genotypes
The offspring have two dominant genotypes
The mother has blue eyes
A father has brown hair (B), but the offspring have red hair (a recessive trait), like their mother (b). How is this possible?
It's not the real mother
It can't be the real father
The mother carries the dominant trait (Bb)
The father carries the recessive trait as well (Bb)