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Worksheetsheredity
Total questions: 20
Worksheet time: 11mins
The brown eye trait is dominant over blue eyes. Which of the following genotypes best represents the phenotype for blue eyes?
BB
Bb
bb
bB
Each organism has 2 alleles for a particular trait. Where do these two alleles come from?
One from each parent
Both from one parent
Alleles do not come from parents
The kidney
What is the genotype for #15?
rr
Rr
RR
rR
An organism’s physical appearance of visible traits is a _____________.
Genotype
Phenotype
Homozygous
Heterozygous
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
An organism that is the offspring of many generations that show the same form of a trait.
Heterozygous
Dominant allele
Purebred
Genotype
The different forms of a gene.
Genes
Allele
Phenotype
Pedigree
An organism that has two different alleles for a trait.
Genotype
Phenotype
Homozygous
Hybrid
Two parents have type O blood. What will the blood type of their children be?
O
They can have all four types of blood
Either A or O
AB
In peas, yellow pod color is dominant to green pod color. Two heterozygous parents are crossed. What are the chances that the offspring will have green pods?
25%
50%
75%
100%
A woman has type AB blood and her husband has type O blood. The doctor tells them their child has type O blood. She thinks this is very strange. Why?
She can't be the mother of a type O child.
Her husband can't be the father of a type O child.
Type O blood is very rare.
There's nothing strange about it.
Two pea plants are crossed that are heterozygous for both height and flower color. Tall is dominant to short and purple is dominant to white. What is the phenotypic ratio of the offsprings.
9:3:3:1
10:2:2:2
5:4:4:3
6:6:2:2
