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WorksheetsGenetics - Unit 3 Beyond Mendel's Genetics
Total questions: 50
Worksheet time: 58mins
When the trait has no recessive but 2 distinct versions that when combined create a blend of the 2 versions this is called___.
Mendelian Inheritance
Incomplete Dominance
Codominance
Multiple Alleles
In wolves, coat color is Black, White, or Gray. This shows incomplete dominance. How would you write a genotype for a Gray wolf?
BB
WW
BW
Bb
BW and Bb are both correct
When both versions of the trait show up in the heterozygous individual, this type of inheritance is called ___.
Incomplete dominance
Codominance
Multiple alleles
Polygenic Inheritance
In one type of flower, The flowers can be Pink, White or a Pink and white striped. This is codominance. How would a genotype for a white flower be written?
IPIP
IPIW
IWIW
WW
IWIW and WW would both be correct
In humans blood type is a trait that shows codominance and multiple alleles. How would the genotype for a heterozygous A blood type be written?
AO
IAIA
IAi
All of these show heterozygous A blood correctly
Any trait who's gene is found on the X chromosome shows what type of inheritance?
Polygenic
Multiple Allele
Sex-linked
Codominance
Hemophilia is a sex-linked trait. Which of the following would show a cross between a carrier female and a man with hemophilia?
XHXh x XhXh
XHXH x XhY
XHXh x XHY
XHXh x XhY
The trait for skin color is controlled by 3 genes each with 3 alleles. Skin color is an example of ____ inheritance.
Sex-linked
Multiple Alleles
Incomplete dominance
Polygenic
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross a red flower with a speckled flower. What is the phenotypic ratio?
2 red, 2 speckled
2 red, 2 blue
2 blue, 2 speckled
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross two speckled flowers.
1 red, 2 speckled, 1 blue
2 red, 2 blue
2 blue, 2 speckled
1 red, 1 speckled, 2 blue
In cattle red coats are represented as RR, and white coats are represented as WW.
What is the genotype for Roan color?
RR
RW
WW
This is an example of ---
Incomplete dominance
Codominance
A woman with curly hair and a man with straight hair produced a child with wavy hair:
Incomplete dominance
Codominance
Complete dominance
If the offsprings have the blood groups O and A the genotype of parents would be
IAIA and IAi
IA i and ii
IAIA and IAIA
IA i and IBi
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
O and AB
O and A
O and B
A and B
There are multiple alleles for the ABO blood group. Why are only two of these alleles present in any one individual?
Each parent contributes only one allele for the ABO blood group to the offspring.
There are not enough nucleotides in a red blood cell to produce a third allele.
Each allele in the ABO group must be dominant or recessive
Blood group alleles are not segregated during meiosis.
A personal with type AB blood has which genotype?
type A
AA
IAIA
IAIB
Which term(s) best describes the inheritance of human blood types?
incomplete dominance and multiple alleles
codominance and epistasis
codominance and multiple alleles
incomplete dominance and codominance
What is NOT a possible genotype for someone with type B blood?
BB
AB
BO
A woman has type B blood and her husband has type O blood. What must be the woman's genotype, if they have a child with type O blood?
BO
BB
OO
B
What type of inheritance is determined by multiple genes and there can be a range of traits?
Codominance
Incomplete dominance
Polygenic traits
A single gene has 3 or more alleles. These are called
multiple genes
multiple alleles
codominance
polygenic traits
Examples include skin color and height (the individual's phenotype exists somewhere along a spectrum)
polygenic inheritance
multiple alleles
linked genes
incomplete dominance
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?
male with white eyes
female with red eyes
male with red eyes
female with white eyes
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?
male with white eyes
female with white eyes
male with red eyes
female with red eyes
In fruit flies, eye color is a sex linked trait. Red is dominant to white. What is the sex and eye color of flies with the following genotype: X R X R ?
male with red eyes
female with red eyes
male with white eyes
female with white eyes
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X r Y ?
male with red eyes
female with red eyes
male with white eyes
female with white eyes
In a cross between a pure red eyed female and a white eyed male, what would the genotypes of the parents be?
XRXr with XR Y
XRXr with Xr Y
XRXR with XR Y
XRXR with Xr Y
XrXr with Xr Y
Look at this cross: XB XB x Xb Y
What proportion/percent of the male children are colorblind?
100%
75%
25%
0%
Look at this cross: XBXb x XBY
What proportion of the male children are colorblind?
100%
75%
50%
25%
H= normal blood clotting
h=hemophilia
XHXh x XHY
What is the probability that any of their offspring will have hemophilia?
4/4
3/4
2/4
1/4
Which chromosome contains more genes?
The X chromosome
The Y chromosome
They are homologous, so they contain the same amount of genes.
Males can be heterozygous for sex-linked traits.
True
False
How many recessive genes does a carrier female have for colorblindness?
1
2
0
The bison herd on Konza Prairie has a sex-linked trait known as “rabbit hock” in which the knee of the back leg is slightly malformed. A male bull that is normal mates with a cow that is a carrier for rabbit hock. What are his chances of producing a normal male?
0%
25%
50%
100%
In a pedigree, what is the symbol for an Affected Male (a male with the condition)?
Half Circle
Half Square
Full Shaded Circle
Full Shaded Square
Which best explains why individual IV-7 has colorblindness?
Because her mom is a carrier and her dad has the gene
Because her dad has it.
Because her siblings have it.
Because her uncle has it.
If hemophilia is a sex-linked recessive trait, what genotype would individual III-3 have?
XhX
XhXh
XhYh
XhY
Clones have the exact same:
Personalities
Physical appearances
Intelligence levels
Genetic material
How many sheep were required to create Dolly?
3
2
1
0
