In watermelons, green rinds (G) are dominant to striped rinds (g). What is the genotype of a heterozygous green watermelon?
GG
Gg
gg
green
2. Multiple Choice
1 minute
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%
3. 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%
4. Multiple Choice
1 minute
1 pt
One of the two forms of a gene is called a(n)
genotype
allele
hybrid
trait
5. 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
6. Multiple Choice
1 minute
1 pt
When a person has two different alleles for a gene, they are said to be
heterozygous
homozygous
7. Multiple Choice
30 seconds
1 pt
Why is crossing over important?
Increases the number of genes that can be inherited
Increases genetic variation
Decreases the occurrence of genetic diseases
Decreases the number of genes that can be inherited
8. Multiple Choice
1 minute
1 pt
A __________ allele always shows up in an organism when the it is present.
dominant
hybrid
9. Multiple Choice
30 seconds
1 pt
This process produces four sex cells, each containing half the usual number of chromosomes.
meiosis
mitosis
10. Multiple Choice
45 seconds
1 pt
This is an example of a ______________.
phenotype
genotype
xenotype
base pairs
11. Multiple Choice
1 minute
1 pt
The passing on of physical or mental characteristics genetically from parent to offspring.
mitosis
heredity
hydrogen bonds
chromosomes
12. Multiple Choice
1 minute
1 pt
This is an example of _____________.
phenotype
heliotype
DNA
genotype
13. Multiple Choice
1 minute
1 pt
The genetic makeup of the flower is _____________
red
heterozygous
homozygous dominant
homozygous recessive
14. Multiple Choice
1 minute
1 pt
The genetic make up of this flower is ________.
homozygous recessive
heterozygous
homozygous dominant
white
15. Multiple Choice
1 minute
1 pt
The genetic makeup of the flower is ______.
homozygous dominant
heterozygous
pink
homozygous recessive
16. Multiple Choice
1 minute
1 pt
A diagram used to predict an outcome of a cross or breeding experiment.
pedigree
Punnet Square
17. Multiple Choice
1 minute
1 pt
In this example, the child displays the ________ trait.
dominant
recessive
18. Multiple Choice
1 minute
1 pt
In this example, the child displays the ______ trait.
recessive
dominant trait
19. Multiple Choice
1 minute
1 pt
A small section of the gene that is a phosphate, sugar, and base.
nucleotide
DNA
heterozygous
genotype
20. Multiple Choice
1 minute
1 pt
A unique molecule that has a twisted ladder shape (double helix).