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Genetics Review
Test Description: Review for a test covering 8th Grade level Genetics
Instructions: Answer all questions to get your test result.
1) Who is the monk known as the father of genetics?
A
Mendel
B
Watson
C
Welch
D
Rutherford
2) Where do an organism’s genes come from?
A
the mother and the father
B
neither the mother or father
C
the father only
D
the mother only
3) Why were pea plants used in early genetic experiments?
A
All of the above.
B
Their mating was easy to control
C
They had very distinct traits (ex, either purple or white flowers, either short or tall stems, ect).
D
They grew fast and produced a lot of offspring.
4) Which trait is most likely determined by genes?
A
how old a person is
B
what a person likes to eat
C
when a person wakes up
D
whether a person has dimples
5) What is a phenotype?
A
when you have two different alleles
B
what you can see about a trait
C
when you have two of the same alleles
D
what genes a person or thing has
6) What is a genotype?
A
when you have two different alleles
B
what you can see about a trait
C
the allele you use an upper case letter for
D
what genes a person or thing has
7) What is the term for a form of a gene?
A
allele
B
trait
C
heredity
D
genotype
8) Which is a heterozygous genotype?
A
Hh
B
HH
C
hh
9) Which is a homozygous genotype?
A
dd
B
dD
C
Dd
10) Which is a homozygous dominant genotype?
A
Ff
B
ff
C
FF
11) f B=brown and b=blue, we know that blue is recessive and brown is _________________.
A
recessive
B
a gene
C
a trait
D
dominant
12) If a baby goat received a dominant gene for curly hair from one parent, and a recessive gene for straight hair from the other, which trait will the baby goat display?
A
Straight hair
B
Straight and curly hair
C
No hair
D
Curly hair
13) The allele for yellow seeds in pea plants, Y, is dominant. The allele for green seeds in pea plants, y, is recessive. Which combination would produce a plant with green seeds?
A
YY
B
Yy
C
yy
D
yY
14) In humans, the allele for brown eyes, B, is dominant over the allele for blue eyes, b. Which combination of alleles shown below could result in a person with blue eyes?
A
Bb
B
BB
C
bB
D
bb
15) What is the difference between phenotype and genotype?
A
Phenotype is when both alleles are the same and genotype is when the alleles are different.
B
Phenotype are the alleles that are masked and genotype are the alleles that are expressed.
C
Phenotype is the physical expression of a trait and genotype is all of the alleles in the organism.
D
Genotype is the physical expression of a trait and phenotype is all of the alleles in the organism.
*select an answer for all questions
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