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Ch. 9 + 12 Genetics Flashcards | StudBud
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Ch. 9 + 12 Genetics
Ch. 9 + 12 Genetics
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1
The inheritance pattern that results in a blending of phenotypes in offspring is
codomiance
complete dominance
incomplete dominance
sex-linked
2
Which law states that gametes only receive one copy of allele from each parent?
segregation
probability
independent assortment
superposition
3
Traits controlled by one gene with 3 or more alleles are called _____.
multiple alleles
codominance
polygenic
incomplete dominance
4
Which pattern of inheritance results in two dominant traits showing equally in offspring?
codominance
polygenic
complete dominance
multiple alleles
5
The pattern of inheritance with 2 phenotypes and 3 genotypes is
multiple alleles
codominance
complete dominance
incomplete dominance
6
What is the genotype ratio for females in the square below?
2 : 0
1 : 1
3 : 1
2 : 2
7
When Mendel crossed two purple flowers in his second generation the offspring were
all purple
mostly white but some purple
mostly purple but some white
all white
8
Polygenic traits are called complex characters because they are influenced by _________ and ________.
genes and evolution
the environment and mitosis rate
the environment and evolution
genes and the environment
9
We cannot donate blood type B to a person with blood type A because the person with type A would
make antigens against the type B antibodies
convert the type B cells to type A cells
convert the red blood cells to white blood cells
make antibodies against the type B antigen
10
For sex-linked traits fathers will pass a recessive allele on the X chromosome to
daughters and sons
daughters only
sons only
it depends on what the mother has
11
The alleles possible for human blood type are
IA, IB, and i
IA, IB and IO
IA, IB and io
IA, IB, Ia and Ib
12
What is the term used to describe a letter combination like BB?
homozygous dominant
homozygous recessive
heterozygous recessive
homozygous recessive
13
Which law explains that genes on different chromosomes are not inherited together?
probability
superposition
Independent assortment
segregation
14
A person with type AB blood shows which pattern of inheritance?
sex-linked
complete dominance
codominance
incomplete dominance
15
A change in a gene that can create a new form of a trait is known as a _____.
duplication
extraction
transformation
mutation
16
If someone has pigment in the back of the iris only then they will have _____ eyes.
red
green
blue
brown
17
If the overriding gene for skin pigment is recessive then the skin will be
light brown
dark brown
albino
very fair
18
A flower shows incomplete dominance. Crossing a red with a white one results in
all red flowers
all white flowers
all pink flowers
red and white striped flowers
19
Forms of a gene are called
chromosomes
genotypes
phenotypes
alleles
20
What combination of Rh factors would pose a problem for a baby?
mom is Rh-, dad is Rh+ and baby is Rh-
mom is Rh+, dad is Rh- and baby is Rh+
mom is Rh+, dad is Rh- and baby is Rh+
mom is Rh-, dad is Rh+ and baby is Rh+
21
A person with type AB blood could donate to
only someone with type O blood
only someone with type AB blood
Someone with type A or B blood
all four blood types
22
One marshmallow baby had a red tail and 2 humps and another had a yellow tail and 1 hump. This is due to
The law of segregation
polygenic inheritance
The Law of Independent Assortment
incomplete dominance
23
If someone has pigment in both the front and back of the iris then they will have _____ eyes.
blue
red
brown
green
24
Which of the following is true regarding sex-linked traits?
they are always codominant
it is carried on the X and Y chromosomes
the son inherits it from his mother
the son inherits it from his father
25
Which of the following would NOT affect a person's adult height?
having a balanced diet
getting enough sleep
having a disease like malaria
getting enough vitamin D from the sun
26
The marshmallow parents were Aa for antennae. What possiblities could their babies have?
Aa and aa
Aa
AA, Aa and aa
AA and Aa
27
Which is true regarding sex-linked inheritance?
females inherit recessive traits more
males inherit recessive traits more
females only get traits from their mother
only males can be carriers of the trait
28
In the complete dominance pattern a flower with the genotype Rr would be
purple
red
pink
red and white striped
29
When Mendel crossed pure purple with pure white flowers, the next generation was
some purple and some white
all white
purple and white striped
all purple
30
A person with blood A has a different ______ on the _____ blood cell compared to a person with blood type B.
carbohydrate; red
protein; white
carbohydrate; white
protein; red
31
The inheritance pattern with two genes each with two alleles is
multiple alleles
dihybrid
monohybrid
polygenic
32
The physical appearance is the ___ and the genetic makeup is the ___
phenotype; genotype
phenotype; karyotype
karyotype; genotype
genotype; phenotype
33
The type of cross needed to study 2 traits with 2 genes each with two alleles is a ____ cross
polyhybrid
trihybrid
monohybrid
dihybrid
34
In both skin and eye color the main gene codes for
chlorophyll
hemoglobin
melanin
keratin
35
A person with blood type B can recieve blood from a person with what blood type(s)?
B and O
B only
B and AB
B, AB and O
36
Which of the following is a polygenic trait?
dimples
spotted pattern of cows
Rh factor
human skin color
37
A trait that is controlled by three or more genes is called
codominant
multiple allele
polygenic
sex-linked
38
Which of the following does NOT influence eye color?
genes that modify shades + patterns
genes that code for pupil size
genes for cell density
genes for collagen
39
In polygenic traits if one gene overrides the expression of other ones this is known as
epidermis
epiphyte
epigenetics
epistasis
40
The number of times an event happens divided by how many times it could happen is
accuracy
probability
precision
statistics
