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Punnett Squares Formative

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Last updated about 2 hours ago
5 questions
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1
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Question 1
1.
Draggable itemarrow_right_altCorresponding Item
Phenotype
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the form of a gene that can mask the other
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Question 2
2.

In humans the ability to taste Phenylthiocarbamide (PTC) is dominant. “Tasters” (TT) or (Tt) taste an extremely bitter taste from PTC, while “non-tasters” (tt) do not taste anything.

What are the genotypes of Mr. and Mrs. Jones if they can taste PTC but have a child who is a non-taster?

Question 3
3.

Question 4
4.

What would the phenotype of the foal produced in the previous question be?

Question 5
5.

In pigs, having erect ears that stick up (E) is dominant to having droopy ears (e).


If a pig has droopy ears what must its genotype be?

Recessive
the form of a gene that can be covered up when present with another form
Dominant
the way an organism looks
Homozygous
the genetic make up of an individual
Genotype
having two of the SAME version of a gene (dominant or recessive)
Heterozygous
having two DIFFERENT versions of a gene
There is not enough information to determine this
TT
In horses, having black hair is dominant (B) to having chesnut colored hair (b).



If a homozygous dominant horse is crossed with a chesnut colored horse, then what are the chances they will have a foal (a baby horse) with chesnut colored hair?
50%
75%
100%
black
bb
ee
can't be determined