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WorksheetsGenes and Genetics
Total questions: 52
Worksheet time: 2hrs 33mins
when both ttraits are expressed or seen in the phenotype.
Codominance
Punnett squares
Complete dominance
Incomplete dominance
Which of the following is true about blood type O?
It contains antigen A only.
It contains antigen B only.
It contains both antigen A and antigen B.
It doesn’t contain antigen A or antigen B.
Which of the following refers to a complete dominant cross?
One allele completely masks the effect of another allele.
The two alleles are equally seen in the heterozygous genotype.
The two alleles are blended in the heterozygous genotype.
Neither allele is seen in the phenotypes.
In the image above, the trait for flower color is controlled by codominance. R codes for red flowers and W codes for white flowers. Which of the following correctly reports the phenotypes?
100% red flowers
50% white flowers and 50% pink flowers
50% red flowers and 50% red and white flowers
50% white flowers and 50% red flowers
____________ are proteins that are found on the surface of some red blood cells.
genes
alleles
antigens
immunoglobins
Which of the following genotypes code for the blood type AB?
AB
A
B
O
Which of the following codes for blood type O?
AA
AO
BO
OO
What antibodies can be found when someone has blood type A?
none
A
B
A and B
Which of the following is true about blood type O?
It contains antigen A only.
It contains antigen B only.
It contains both antigen A and antigen B.
It doesn’t contain antigen A or antigen B.
AB
A
B
O
What inheritance patterns makes the blood type AB possible?
incomplete dominance
multiple alleles
codominance
total dominance
What are the blood types of the possible offspring that a woman (type O) and man (type AB) can have?
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 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?
Heterozygous B
Homozygous B
Homozygous O
Heterozygous O
Select all that type B can receive from
A
B
AB
O
If a father is heterozygous A and the mother is heterozygous B, what are the possible phenotypes of the offspring?
25% AO
25% AB
25% BO
25% OO
50% A
50% B
25% A
25%AB
25% B
25% O
25% A
25% B
50% O
When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....
Incomplete Dominance
Codominance
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 mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.
What is the genotype for a brown mouse?
BB
Bb
bb
Which of the following is heterozygous?
MM
Mm
mm
Which of the following is heterozygous?
MM
Mm
mm
Which of the following is homozygous dominant?
RR
Rr
rr
Which of the following is homozygous recessive?
What term denotes the physical expression of a gene?
genotype
phenotype
appearance
homologous
Which of these genotypes would most likely be used to represent the dominant for pea plant height?
TT
tt
PP
pp
Which of the following would produce a recessive phenotype?
hh
Rr
Ww
BB
Which of the these is homozygous?
gg
Yy
Nn
Ee
What organism did Mendel study?
pea plants
onions
mice
cats
In the punnett square below, what belongs in the missing square
Which of the following is a genetic trait?
time
temperature
eye color
diet
If brown hair is represented by the allele "B" and blond hair is represented by the allele "b" then what must be the genotype of someone who has blond hair?
BB
bb
Bb
either BB or Bb
What type of organism was used to determine the basic patterns of heredity?
fruit flies
dogs
potato plants
pea plants
What is a phenotype?
the alleles in an organism
the genetic code
a fake gene
the physical traits expressed
If black fur is dominant and white fur is recessive, what are the possible offspring of two black mice bred together?
all black
all white
half white and half black
any of the above are possible, depending on the parents' genotypes
