WorksheetsComplex/Special Genetics Crosses
Total questions: 23
Worksheet time: 34mins
In a certain species of animal, black fur (B) is dominant over tan fur (b).
Which type of dominance does this gene show?
Complete Dominance
Incomplete Dominance
Codominance
Polygenic Inheritance
This picture shows an an example of what type of inheritance?
Incomplete Dominance
Codominance
Sex linked inheritance
Complete dominance
A tall plant (tt) is crossed with a short plant (ss) and a medium plant (ts) results. This is what type of inheritance pattern?
Incomplete Dominance
Codominance
simple dominance
sex-linked inheritance
If a gene for a specific trait is found only on the X chromosome and not the Y chromosome, the trait is said to be what?
sex-linked trait
polygenic trait
codominant trait
incomplete dominance trait
Sex-linked conditions are more common in men than in women because ______
The genes associated with the X linked conditions are linked to the X chromosome, which determines maleness.
Men need to inherit only one copy of the recessive allele for the condition to be fully expressed
Women simply do not develop the disease regardless of their genetic composition
The sex chromosomes are more active in men than in women
For a female to express a recessive sex-linked trait, she must have....
two recessive alleles
a Y chromosome
one recessive allele
two dominant alleles
Flowers can be purple, yellow or purple & yellow. What type of heredity is displayed?
Codominance
Complete dominance
Incomplete dominance
polygenic inheritance
Chickens can be white, black or speckled white and black.
A purebred white chicken and a homozygous black chicken are mated together, what is true about the chicks from these 2 chickens?
100% will be speckled black and white
50% black 50% white
100% black
25% white, 25% black 50% speckled black and white
Allele used to represent human blood types are A, B and o. The inheritance of human blood type is an example of which types of genetic inheritance?
(you should select more than one answer)
Codominance
Polygenic traits
Multiple Alleles
Sex-linked traits
Incomplete dominance
Hemophilia is a sex-linked recessive trait. What are the chances for a woman with hemophilia and a man without hemophilia to pass this disorder on to their son?
100%
50%
25%
0%
75%
A man with type A blood and a woman with type B blood have a child. The child has type A blood. What are the possible genotypes of the parents. Choose one option for the mother and one option for the father.
Mom - BB or Bo
Mom -Bo only
Dad -AB, AA or Ao
Dad - AA or Ao
Dad - Ao only
When we say that a woman is a carrier for a genetic disease or disorder it means __________
She is heterozygous - she carries 1 allele for the disorder, but does not have the disorder
She is homozygous she carries 2 aleles for the disorder, and has the disorder
she can pass the allele only to male children
she can pass the allele only to female children
She cannot pass an allele for the diseas to any of her children
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
XHXh
XhXh
XHXH
XhY
XHYh
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
XHXh
XhXh
XHY
XhY
XhYh
Males can be heterozygous for sex-linked traits.
True
False
If one parent is blood type A and the other parent is type B, which of the following blood types could their children inherit?
(Select ALL of the correct possibilities)
O
AB
A
B
A father has type AB blood and the mother has type O. What percentage of their offspring would you expect to have?
Type A, 25%, Type B 25%, Type AB 25%, Type O 25%
Type A 50%, Type B 25%, Type AB 25%, Type O 50%
Type A blood 50%, Type B 50%, Type AB 0%, Type O Blood 0%
Type A blood 100%
A father is heterozygous for his type A blood and a mother has type O blood. What percentage of their offspring would you expect to have each blood type?
25% chance for each blood type
50% Type A, 50% Type O
100% Type A
100% type O
