Heredity Test Review

An organism's physical appearance or visible traits

• fertilization
• genotype
• phenotype
• homozygous

When alleles are neither dominant nor recessive (As a result, both alleles are expressed in the offspring.).

• codominance
• probability
• recessive allele
• Punnett Square

This trait always shows up in an organism when the allele is present

• dominant allele
• codominance
• probability
• recessive allele

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

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

• they have same phenotype and genotype
• they have different genotypes and phenotypes
• they have same phenotype but different genotypes
• they have same genotype but different phenotypes

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

What gender has an X and a Y chromosome?

• male
• female
• transgender 
• all of the above

In a pedigree, what shape represents a male?

• circle

• square

• triangle

• diamond