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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
Rutherford
B
Mendel
C
Welch
D
Watson
2) Where do an organism’s genes come from?
A
the father only
B
neither the mother or father
C
the mother only
D
the mother and the father
3) Why were pea plants used in early genetic experiments?
A
Their mating was easy to control
B
They grew fast and produced a lot of offspring.
C
They had very distinct traits (ex, either purple or white flowers, either short or tall stems, ect).
D
All of the above.
4) Which trait is most likely determined by genes?
A
what a person likes to eat
B
when a person wakes up
C
how old a person is
D
whether a person has dimples
5) What is a phenotype?
A
when you have two different alleles
B
what genes a person or thing has
C
when you have two of the same alleles
D
what you can see about a trait
6) What is a genotype?
A
when you have two different alleles
B
the allele you use an upper case letter for
C
what genes a person or thing has
D
what you can see about a trait
7) What is the term for a form of a gene?
A
genotype
B
heredity
C
trait
D
allele
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
a trait
B
a gene
C
recessive
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 and curly hair
B
No hair
C
Straight 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 the physical expression of a trait and genotype is all of the alleles in the organism.
B
Phenotype are the alleles that are masked and genotype are the alleles that are expressed.
C
Phenotype is when both alleles are the same and genotype is when the alleles are different.
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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