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