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Genetics Review
Test Description: Review
Instructions: Answer all questions to get your test result.
1) What is a physical characteristic that shows up because of your genes
A
DNA
B
heredity
C
genotype
D
phenotype
2) What is a Punnett Square used for?
A
To predict the possible genotypes for offpsring of two parents
B
Don't pick me!
C
To guarantee you get the traits you want in your children
D
To show exactly what genotypes your children will have...for sure!
3) What is a physical characteristic called that makes organisms differ from each other?
A
gene
B
trait
C
genotype
D
DNA
4) What controls your traits?
A
your genes
B
your blood type
C
Your hair color
D
a punnett square
5) Cross a homozygous red rose (RR) with a homozygous white rose. (rr) What is the probability that you will have a red rose?
A
25%
B
100%
C
50%
D
75%
6) How many chromosomes do humans have in their body cells?
A
23 total
B
1 set
C
46 total
D
46 pair
7) How many chromosomes are in human sex cells?
A
1
B
46
C
23
D
none
8) With sexual reproduction, offspring will-
A
will not have any of the genes of their parents
B
will have a combination of genes from both parents
C
will have the exact same genes as their siblings
D
be identical to their parents
9) With asexual reproduction, offpsring will-
A
be identical to the parent
B
will not have any of the genes of their parent
C
will have a combination of genes from both parents
D
will never be produced
10) What is is called to have two different alleles for the same trait?
A
Homozygous
B
Heterozygous
C
dominant
D
purebred
11) What is is called when you have two identical alleles for one trait?
A
hybrid
B
homozygous
C
recessive
D
heterozygous
12) Which type of allele will always show up when it is present?
A
weak
B
gene
C
Dominant
D
Recessive
13) How do recessive traits show up?
A
You can have just one and it will show up
B
It has to be paired with a dominant
C
It will only show up if there are two recessives for a trait
D
It always gets hidden no matter what
14) The passing on of genetic information from one generation to another is-
A
heredity
B
traits
C
DNA
D
genetics
15) If tall flowers (T) are dominant to short flowers (t)-what is the probability of producing a tall flower if you cross two heterozygous flowers (Tt)?
A
25%
B
100%
C
75%
D
0%
16) The actual genetic make up and organism has for a particular trait-
A
genotype
B
gene
C
DNA
D
phenotype
17) Cross a heterozygous black bunny (Bb) with a homozygous white bunny (bb)? What is the probability of getting a white bunny?
A
100%
B
0%
C
25%
D
50%
*select an answer for all questions
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