Chapter 6 Test Flashcards
If an organism’s genotype for a particular trait is Tt, then the organism is
hybrid
The study of inheritance is called
genetics
When a doctor analyzes high-frequency sound waves sent through the mother’s body to see an unborn child
ultrasound
Phenotype represents the
physical characteristic
The genes for most sex-linked trains re carried on this chromosome
X
In genetics, a cross is
a test to see how traits are inherited
The normal diploid chromosome number in humans
46
A cross between snapdragons with red flowers and snapdragons with white flowers that produces snapdragons with pink flowers is an example of what
incomplete dominance
A diagram used to visual genetic crosses
Punnett Square
The condition in which two dominant alleles for a single characteristic are both expressed
codominance
The only sex chromosome found in human females
X chromosome
The sex chromosome found in human males, but not in females
Y chromosome
Two or more genes producing a single trait
polygenic inheritance
A person who has an allele for a particular trait but does not exhibit the trait
carrier
A condition caused by a genetic defect
genetic disorder
The different forms of a gene for a particular trait
alleles
A pea plant with wrinkled peas (recessive trait)
rr
A person with type O blood (recessive trait)
ii
A carrier for red-green colorblindness (sex-linked trait)
XR Xr
A person who is hybrid for type B blood
IB i
A person who is purebred for a recessive sex-linked trait
Xh Xh
Most sex-linked traits are located on this chromosome
X
If an X sperm fertilizes an egg, the child will be a
girl
An organism’s genotype determines its
phenotype
XY
Male
XX
Female
The Father of Modern Genetics because of the discoveries he made will experimenting with pea plants
Gregor Mendel
