WorksheetsComplex Genetics Test RETAKE
Total questions: 40
Worksheet time: 57mins
If you cross a black chicken with a white chicken, only black and white speckled chickens would be produced. What kind of inheritance pattern does this follow?
Why are all the daughters in Generation II carriers of the colorblind gene?
Because their mom passed on the gene.
Because their dad passed on the X chromosome that had the recessive allele.
On a Pedigree, What does a horizontal line between a square and a circle mean?
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a male with hemophilia?
What type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits? An example of this is Skin Color.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
Incomplete Dominance
Codominance
Independent assortment
Recessive inheritance
In some carnations, flower color exhibits codominance. When crossed, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between a speckled flower and a red flower. Find the phenotypic ratio.
A person with Type B blood could receive...
B blood
AB blood
O blood
A blood
Type AB
Type B
Type O
Type A
In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.
What is the genotype for erminette chickens?
Erminette
BB
BW
WW
Draw a Punnett Square the shows the cross between two Erminette chickens. Based on the Punnett square showing the cross between two erminette chickens, Match the following
Probability offspring will be black
25%
Probability offspring will be Erminette
50%
Probability offspring will be white
25%
In snapdragons, flower color is controlled by incomplete dominance. The two alleles are red(R) and white(r). The heterozygous genotype is expressed as pink. Match each genotype with its correct phenotype.
RR
Red
Rr
Pink
rr
White
Draw a Punnett Square showing the cross between a pink flower and a white flowered plant. A pink flower is crossed with a white flowered plant. What is the probability of producing a pink flowered plant?
0%
25%
50%
100%
Blood type: Match the following genotypes to the correct phenotypes
ii
Type O
Ai, AA
Type A
BB, Bi
Type B
AB
Type AB
Draw a Punnett Square to show this cross: a mother who has O blood type with a male that has homozygous A blood type. Will they have the chance of having any Type AB children?
Yes, there is the probability they could have a Type AB baby.
NO, there is the no probability they could have a Type AB baby.
What are the possible blood types of a child whose parents are both heterozygous for Type B blood?
Type O
Type AB
Type B
Type A
Which best explains why males cannot be carriers of X-linked traits?
Males only have one X chromosome
Males have two copies of the X chromosome
Males can be heterozygous for a particular trait
Males do not have an X chromosome
8
5
2
3
Looking at this pedigree, should the father be shaded and what is the genotype of the mother?
No
Yes
Huntington's Disease is an autosomal dominant disorder. What would the genotype of an affected person be?
Hh
hh
HH
none of these
The blending of two traits is known as ---
incomplete dominance
codominance
A condition in which both alleles for a gene are expressed so that both traits are visible is known as ---
Codominance
Incomplete dominance
What type of inheritance pattern is shown here?
Codominance
Incomplete dominance
A person with a Type A Blood Type would have what potential genotypes?
IAIA
IAi
ii
IAIB
A person with a Type O blood type would have what potential genotype?
IBIB
IBi
ii
IAIB
if the father is type A and the mother is type B, in order for baby Sylvester to have the genotype ii, his parents must be?
heterozygous
homozygous
In sex linked disorders, most typically the males receive the sex- linked disorder from their ________.
Mothers
Fathers
Grandparents
When dealing with sex chromosomes, who determines the sex of the baby?
Mother
Father
Grandparents
Looking at a two trait dihybrid cross, cross a homozygous dominant parent with a homozygous recessive parent for both traits.
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
