WorksheetsGenetics Review
Total questions: 15
Worksheet time: 21mins
If tall eyeballs (T) are dominant to short eyeballs (t), give the genotypes that are possible for tall eyeballs.
(a)
Select all of the following genotypes that are considered Heterozygous.
AA
Bb
zz
Dd
Hh
Select all of the following genotypes that are considered Homozygous.
AA
bb
Hh
Dd
zz
Which of the following is homozygous dominant?
Yy
Y
yy
YY
What does heterozygous mean?
An organism that has the same alleles(genes) for a trait.
An organism that has different alleles(genes) for a trait.
When neither gene is fully dominant; offspring is a mixture of both.
The different forms of a trait.
In humans, blue eyes are a recessive trait. What genotype would a blue eyed child have?
BB
Bb
bb
None of the above, brown eyes are dominant.
What is the mother's genotype?
DD
Dd
dd
Why do scientist use Punnett Squares?
A tool scientist use to to see alleles
A tool scientist use to see which alleles are dominant
A tool scientist use to determine possible genotypes for offspring
Brown eyes are dominant over blue eyes. What is the probability that the offspring will have brown eyes in this cross?
25%
50%
75%
100%
Alleles (example: H or h) are alternative forms of a gene. How many alleles does a baby guinea pig inherit from their mother?
1
2
23
whichever one is dominant
Two brown eyed parents (Bb) have a baby. What is the chance their baby is blue eyed?
0 %
25%
50%
75%
