What is the inheritance pattern when both alleles are expressed equally in the phenotype of a heterozygote?
codominance
What is the inheritance pattern when the dominant allele is not completely dominant?
incomplete dominance
What is the inheritance pattern associated with ABO blood typing in humans?
multiple alleles
In a cross between a homozygous dominant parent ( PP ) and a homozygous recessive parent ( pp ), what is the chance the offspring will have the heterozygous genotype ( Pp ).
100%
In a cross between a homozygous dominant parent ( PP ) and a homozygous recessive parent ( pp ) what is the chance the offspring will have the dominant phenotype?
100%
In a cross between a homozygous dominant parent and a heterozygous parent, what is the chance of the offspring having a heterozygous genotype?
50%
In a cross between a homozygous dominant parent and a heterozygous parent, what is the chance the offspring will have the dominant phenotype?
100%
In a cross involving two heterozygous parents, what is the chance of the offspring having the dominant phenotype?
75%
The rules of probability have a lot to do with how genetics behaves.
True
If an individual has a Gg genotype then half of the gametes they produce will have the G allele, and half will have the g allele.
True
A Punnett square is a chart that helps to determine the expected genotypes of the offspring of two parents.
True
In a cross between two homozygous dominant individuals ( PP x PP ), 25% of the offspring may have the recessive phenotype.
False
A parent cell makes gametes using the process of mitosis.
False
It is entirely likely for a gene to have more than two possible alleles.
True
Incomplete dominance occurs when the recessive allele is not completely hidden by the dominant allele.
True
Your height and skin color are due only to your genes.
False
In a cross between an individual homozygous dominant for two traits ( BBTT ) and an individual that is homozygous recessive for the same traits ( bbtt ), all of the F1 offspring will have the dominant phenotype.
True
All genetics is fairly straightforward and follows the patterns Mendel observed in pea plants.
False
Codominance occurs when there is essentially no recessive allele and both versions of the allele may be expressed at the same time.
True
If one parent has the MM genotype and the other parent has the mm genotype, the only possible phenotype of the offspring is Mm.
False
In any cross between two heterozygous parents ( Tt x Tt for example), half the offspring will have the dominant phenotype and half the offspring will have the recessive phenotype.
False
When you toss a coin in the air probability states that it will land Tails up 50% of the time.
True
If you toss a coin there is a ______________ chance it will turn up heads.
50%
A Punnett square allows you to determine the expected percents of different ______________ in the offspring of two parents.
Genetypes
______________ is when both alleles are expressed equally in the phenotype of a heterozygote.
Codominance
______________ is the chance that a certain event will occur.
Probability
Paired alleles always separate and go to different gametes during ______________.
Meiosis
If one parent is heterozygous and the other parent is homozygous recessive, the probability that their child will be homozygous recessive is ______________.
50%
If a parent has a Dd genotype, the probability of their child inheriting a d allele from that parent is ______________.
50%
______________ dominance occurs when the dominant allele is not completely covering the recessive allele from being expressed.
Incomplete
Sometimes an individual's phenotype is not due to just his or her genes, but also ______________ influence.
Environmental
A cross between a homozygous dominant individual and a homozygous recessive individual will always result in a ______________ individual.
Heterozygous
ABO blood type in humans is a characteristic due to multiple ______________.
Alleles
When a Bb pea plant forms gametes, the B and b alleles segregate and go to different ______________.
Gametes
Occurs when the dominant allele is not completely dominant
Incomplete dominance
Closely associated with appearance
Phenotype
An example of a characteristic due to multiple alleles
ABO blood type
Controlled by more than one gene
Polygenic characteristic
The expressed allele in a heterozygote
Dominant allele
Cell division involved in gamete formation
Meiosis
Used to determine the probability of different genotypes in offspring
Punnett square
An alternative form of a gene
Allele
Chance that a certain event will occur
Probability
Only expressed when the other allele is absent
Recessive allele
Occurs when both alleles are expressed equally in the phenotype of the heterozygote
Codominance