B = brown eyes b = blue eyes What is true about these two brothers that have brown eyes? One has genotype BB the other Bb.
they have same phenotype and genotype
they have different genotypes and phenotypes
they have same phenotype but different genotypes
they have same genotype but different phenotypes
2. Multiple Choice
1 minute
1 pt
If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?
GB, Gb, gB, gb
GB, GB, gb, gb
Gb, Gb, Gb, GB
GG, BB, gg, bb
3. Multiple Choice
1 minute
1 pt
How many offspring will you have in a dihybrid cross?
4
8
16
5
4. Multiple Choice
1 minute
1 pt
T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?
0%
25%
50%
100%
5. Multiple Choice
1 minute
1 pt
T4 - What genotype is missing from this Punnett Square?
RrYy
RRYY
rryy
RrYY
6. Multiple Choice
1 minute
1 pt
T4 - Based off this Punnett Square, what fraction of the offspring will have wrinkled, yellow seeds?
9/16
3/16
1/16
16/16
7. Multiple Choice
1 minute
1 pt
T4 - What fraction of offspring from the cross AaBB x Aabb will be heterozygous for both traits (ex. AaBb) ?
1/16
1/4
1/2
3/16
8. Multiple Choice
1 minute
1 pt
Assume mom's gametes are on the left, what is her genotype?
TTZz
TtZz
ttZZ
TtZZ
9. Multiple Choice
1 minute
1 pt
Assume dad's gametes are on top, what is his genotype?
AAPP
AaPp
aaPP
Aapp
10. Multiple Choice
3 minutes
1 pt
In watermelons, green rinds (G) are dominant to striped rinds (g). What is the genotype of a heterozygous green watermelon?
GG
Gg
gg
green
11. Multiple Choice
20 seconds
1 pt
In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms?
0%
25%
75%
100%
12. Multiple Choice
1 minute
1 pt
Long tongues (T) are dominant to short tongues in green tree frogs. What is the probability that two frogs that are heterozygous for long tongues could produce offspring with short tongues?
100%
75%
50%
25%
13. Multiple Choice
1 minute
1 pt
One of the two forms of a gene is called a(n)
genotype
allele
hybrid
trait
14. Multiple Choice
1 minute
1 pt
A genotype is
the listing of the alleles for the trait
the physical appearance of the trait
the separation of the chromosomes
the letters seen on the outside of the Punnett square