Random
Punnett Square
Pedigree
Disease
Random
100
What is the difference between codominance and incomplete dominance?
Incomplete dominance is the mixing of the two alleles (for example, red+white=pink) and codominance is the two alleles are each shown.
100
What is the ratio of Mendel's dihybrid cross?
homogeneous dominance:heterozygous:heterogeneous:homogeneous recessive 9:3:3:1
100
What is a carrier?
In genetics, an individual who is heterozygous at a given genetic locus for a recessively inherited disorder. The heterozygote is generally phenotypically normal for the disorder but can pass on the recessive allele to offspring.
100
What is a Tay-Sachs disease?
A human genetic disease caused by a recessive allele for a dysfunctional enzyme, leading to accumulation of certain lipids in the brain.
100
When do you use the addition rule and when do you use the multiplication rule?
Addition rule is a rule of probability stating that the probability of any one of two or more mutually exclusive events occurring can be determined by adding their individual probabilities. Multiplication rule is a rule of probability stating that the probability of two or more independent events occurring together can be determined by multiplying their individual probabilities.
200
Give three examples of polygenetic inheritance.
1) Skin color (eye color, hair color) 2) Hight 3) Finger prints 4) Heart health 5) behavioral traits
200
Homogeneous rabbit for white hair is crossed with a heterogeneous rabbit. White is a recessive trait and black is a dominant trait. What is the phenotypic ratio and the genotypic ratio?
Phenotypic ratio - 2:2 (white hair:black hair) Genotypic ratio - 2:2 (heterogeneous:homogeneous recessive)
200
From which parent did the son inherit the disease gene?
Mother
200
If a pair of homologous chromosomes fails to separate during anaphase of meiosis I, what will be the chromosomes number (n) of the four resulting gametes?
n+1 n+1 n-1 n-1
200
The genes for hemophilia are located on the X chromosome. It is a recessive disorder. List the possible genotypes and phenotypes of the children from a man normal for blood clotting and a woman who is a carrier.
X^(N) X^(N):normal X^(N) Y:normal X^(N) X^(n): carrier X^(n) Y: Hemophilia
300
When did Watson and Crick receive the nobel prize?
1962
300
Purple corn kernels are R, yellow corn kernels are r, starchy kernels are T, and sweet kernals are t. Cross a homozygous dominate parent with a homologous recessive parent. What is the phenotypic ratio and genotypic ratio?
Phenotypic Purple corn kernels&starchy kernels (16) Yellow corn kernels&starchy kernels (0) Purple corn kernels&sweet kernels (0) Yellow corn kernels&sweet kernels (0) Genotypic Heterozygous (16) Homozygous dominance (0) Homozygous recessive (0)
300
What would be the genotype of the nr. 3 of generation 4? Dominant gene: A Recessive gene: a
Aa
300
This is a genetic inheritable disease with symptoms of Cognitive impairment, psychiatric manifestation and chorea. What is the name of the disease?
Huntington's disease
300
Given the parents AABBCc x AabbCc, assume simple dominance and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent?
3/4
400
What is the age difference of Stella and Aurora?
3 years
400
Stella has a widow's peak and her husband Suga does not have a widow's peak. What is the probability that their children has a widow's peak?
100%
400
What is the probability that their second child will have cystic fibrosis?
1/4
400
Aurora's family has a genetically inherited disease. Her father and mother are carrier and Aurora is suffered by this disease. One day, she drank a drink in Prom party. Suddenly she felt sick and then at last fainted. The doctor said the drink contains aspartame which is an artificial sweetener that is composed with phenylalanine and aspartic acid. What disease does Aurora have?
phenylketonuria
400
A man who carries an X-linked allele will pass it on to
all of his daughters
500
When is our best biology teacher's birthday?
2/6
500
What is a test cross?
Breeding an organism of unknown genotype with a homozygous recessive individual to determine the unknown genotype. The ratio of phenotypes in the offspring reveals the unknown genotype.
500
Which is the carriers female of this inheritance? nr. of generation nr.
3 of generation 2 2,7,8 of generation 3 1 of generation 1
500
What is the random separation during meiosis of genes carried on nonhomologous chromosomes?
law of independent assortment
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