Genetics
alleles
Someone who carries one copy of a recessive gene.
carrier
Give an example of an organism which has been selectively bred.
dogs, cats, birds, etc.
DNA
DNA contains four types of these.
Bases
An allele that will always produce a characteristic in an organism.
dominant
Someone whose parents are both healthy has at most a ___________ chance of inheriting a genetic disorder.
25 percent
Give an example of an organism that has been modified with genetic engineering.
tomatoes, corn, soybeans, etc.
Animals that do not need a partner to reproduce reproduce by this process.
asexual reproduction
The two strands of a DNA molecule are twisted together to form this structure.
The _______ square can be used to determine the results of a genetic cross.
Someone whose parents both have cystic fibrosis would have a ________ chance of getting the disease.
100 percent
knowledge (we don't know exactly which genes code for a given trait.)
The name of the first mammal to be cloned.
Dolly
complementary
Two parents with blue eyes have at most a __________ chance of producing a child with brown eyes.
zero percent
If a single-celled bacteria is allowed to undergo binary fission ten times, how many bacteria will it produce?
1024
When DNA is copied, half of the molecule is conserved. Therefore the DNA is __________ __________ during replication.
partially conserved
Two parents with brown eyes have at most at __________ chance of producing a child with blue eyes.
25 percent
The biological catalysts used by the CRISPR system to cut DNA.
enzymes