Punnett Squares etc.
X-Linked
Misc.
Blood Types/Etc.
Pedigrees/Etc.
100
Consider the Punnett Square below.
In pea plants, Tall(T) is dominant to Short(t).
What is the phenotype of the parents?
What is the probability that the offspring will be tall?
Both parents are tall.
75% Tall
100
If a male has inherited an x-linked recessive trait, which parent did it come from?
Mother
100
What process has occurred to produce the following abnormal karyotype?
Nondisjunction
100
List all the possible genotypes for the following blood phenotypes.
A
B
AB
O
A-IAIA, IAi
B-IBIB, IBi
AB-IAIB
O-ii
100
How many generations are shown in this pedigree.
3
200
In pea plants, Tall(T) is dominant to short(t).
What gametes are produced from a
Homozygous Dominant Individual
Heterozygous Individual
Recessive Individual
Homozygous Dominant Individual-T and T
Heterozygous Individual-T and t
Recessive Individual- t and t
200
200
How many chromosomes are in a normal human karyotype?
46
200
Blood type in humans is controlled by which 3 types of inheritance?
Codominance
Simple Dominance
Multiple Alleles
200
300
In a dihybrid cross, where both parents are heterozygous for both traits, what is the probability of producing a homozygous recessive offspring for both traits.
1/16
300
What are the possible genotypes of the offspring?
XDXD
XDXd
XDY
XdY
300
How are 2 recessive alleles inherited?
Each parent had at least 1 copy of a recessive allele and it was passed on to the offspring.
300
Assuming the chart above is tracing the dominant trait of "White Forelock (F)" through the family. F is a tuft of white hair on the forehead.
1) What is the most likely genotype of individual “A”? (FF, Ff or ff?)
2) What is the most likely genotype of individual “C”? (FF, Ff or ff?)
3) What is the probability of the couple A and C having a child with white forelock?
1) Ff
2) ff
3) 50%
400
When 2 parents who are heterozygous for 2 traits, what is the expected phenotypic ratio?
9:3:3:1
400
Is this trait dominant or recessive?
How many individuals have this trait?
What is the genotype for individual II-2 (homzygous dominant, heterozygous, or homozygous recessive)?
What is the genotype for individual III-5 (homzygous dominant, heterozygous, or homozygous recessive)?
Dominant
6
Homozygous recessive
Heterozygous
400
1) How many of the offspring out of 16 are right-handed, tongue rollers?
2) How many of the offspring out of 16 are left-handed, non-tongue rollers?
1) 4/16 or 1/4
2) 4/16 or 1/4
500
In snapdragons, there are 3 flower color varieties (red, white, and pink). When red flowering plants are crossed with white flowering plants, the offspring are all pink.
1) What type of inheritance does this show?
2) Show a cross of 2 pink flowering plants. What percent of the offspring are pink?
3) What percent of the offspring are white?
4) What percent of the offspring are red?
1) Incomplete Dominance
2) 50%
3) 25%
4) 25%
500
In fruit flies, the gene for eye color is on the X chromosome.
The allele for red eyes is dominant to the allele for white eyes. A researcher crosses a heterozygous red-eyed female fly with a white-eyed male fly?
1) What percent of females have red eyes?
2) What percent of males have red eyes?
1) 50%
2) 50%
500
There are 2 size variations in pea plants, tall and short. When 2 pure-breeding tall plants are crossed all offspring are tall. When 2 short plants are crossed, all offspring are short.When a true breeding tall plant is crossed with a short plant, all offspring are tall.
What type of inheritance is exhibited for this trait (incomplete dominance, complete dominance, or codomiance)?
Complete dominance