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Terms in this set (19)
The X and Y chromosomes are called the
A diagram in which several generations of a family and the occurrence of certain genetic characteristics are shown is called
What is the difference between homozygous and heterozygous
Homozygous refers to two alleles that are the same
Which of the following shows a homozygous dominant set of alleles
What is an allele
Different form of a gene
Why do you not see a recessive trait when there is at least one dominant allele
Dominant alleles are always expressed and mask the recessive allele
A person has freckles. Is this a description of a phenotype or genotype
When traits are independent of one another and have no influence over one another, this is called
When a person looks at the blood type of a person, they can have such types as A, B, or AB. Why can you have the type AB?
Blood types are an example of co-dominance where both alleles contribute to the phenotype
A dog is heterozygous for brown fur, which is dominant. it has puppies with another dog that is homozygous for black fur, which is recessive. What will there children's phenotype be?
Both black and Brown
What does it mean by polygenic trait
It is a trait that is controlled by multiple alleles
A person has only dominant alleles. Is this person homozygous or heterozygous?
This is a picture of all the chromosomes a person has.
What kind of cross looks looks at two traits at a time that are independent of one another?
Why did Mendel want to use cross breeding?
to eliminate self polination
What are changes in the DNA of an organism called?
How many alleles do all genes have?
Crosses involving a study of one gene are called what?
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