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Genetics
Test Description: Basic Genetics
Instructions: Answer all questions to get your test result.
1) The physical appearance of an organism is its?
A
homozygous
B
genotype
C
apperance
D
phenotype
2) A number that describes how likely it is that an event will occur is the _______________________ of the event?
A
likelyhood
B
stability
C
probability
D
occurance
3) An organism that is _____________________ has two identical alleles for a trait.
A
homozygous
B
similar
C
heterozygous
D
different
4) A Punnett square shows the combination of ________________________ that parents can pass on to offspring.
A
phenotype
B
alleles
C
genotype
D
letters
5) The genetic makeup of an organism is its?
A
phenotype
B
genotype
C
heterozygous
D
trait
6) Which of these genotypes is heterozygous?
A
AA
B
cc
C
AAA
D
Bb
7) Which of these is not a phenotype?
A
homozygous
B
short
C
tall
D
round
8) On a separate sheet of paper show a cross between individuals that are Aa x Aa, how many boxes of the Punnett square will show an offspring that is AA?
A
4
B
3
C
1
D
2
9) What is the scientific study of Heredity?
A
Biology
B
Genetics
C
Heredity
D
Chemistry
10) A trait that always shows up in the organism when the allele is present.
A
heterzygous
B
dominant
C
homozygous
D
recessive
11) A trait that is hidden or masked when another allele is present.
A
heterozygous
B
homozygous
C
dominant
D
recessive
12) What is made up of many genes joined together carrying hereditary information.
A
chromosomes
B
alleles
C
jeans
D
genes
13) What is a specific characteristic, such as height or color.
A
gene
B
trait
C
recessive
D
chromosomes
14) On a separate sheet of paper show a cross between individuals that are pp x PP, how many boxes of the Punnett square will show an offspring that is pp?
A
3
B
2
C
1
D
none
15) On a separate sheet of paper show a cross between individuals that are Ff x FF, how many boxes of the Punnett square will show an offspring that is Ff?
A
3
B
none
C
2
D
1
16) On a separate sheet of paper show a cross between individuals that are Gg x Gg, what is the probability of getting an offspring that has a heterozygous genotype?
A
75%
B
100%
C
25%
D
50%
17) On a separate sheet of paper show a cross between individuals that are Qq x qq , what is the probability of getting an offspring that is homozygous?
A
0%
B
50%
C
25%
D
100%
18) On a separate sheet of paper show a cross between individuals that are Yy x Yy, what is the probability that an offspring will be totally recessive?
A
100%
B
75%
C
0%
D
25%
19) In humans, brown hair is dominant to blonde hair. Complete a Punnett square to show the genotypes expected for the following cross: heterozygous brown x homozygous blonde. What is the probability of getting an offspring that is homozygous brown?
A
0%
B
25%
C
100%
D
50%
20) On a separate sheet of paper show a cross between individuals that are Hh x HH , how many boxes of the Punnett square will show an offspring that is HH?
A
2
B
1
C
4
D
3
*select an answer for all questions
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