Mitosis
Which does not occur in Prophase of Mitosis?
a) the nucleolus starts to disappear.
b) the nuclear envelope begins to disintegrate.
c) the spindle starts to organize.
d) the chromosomes are replicated.
d) the chromosomes are replicated.
Homologous chromosomes will swap genetic material in a process known as:
Crossing over
What law states that each pair of alleles segregates independently of each other pair of alleles during gamete formation?
Law of independent assortment
A black Labrador retriever (BbEe) is crossed with a yellow Lab (Bbee). In a litter of eight (8) F1 puppies, what is the probability for black labs, chocolate labs or a yellow labs?
3 black, 1 chocolate, 4 yellow
What is the Hardy Weinberg equation for allelic frequency?
Dominant + recessive = 1 (p + q = 1)
Prokaryotic cells can divide via:
Binary Fission
How is meiosis II similar to mitosis?
Sister chromatids separate
In _________ the phenotype of F1 hybrids is somewhere between the phenotypes of the two parental varieties
Incomplete dominance
Flower color in snapdragons is an example of incomplete dominance. If a red-flowered plant is crossed with a white-flowered plant, the F1 generation has pink flowers. If a pink-flowered plant is crossed with a pink-flowered plant, the progeny plants will be:
(in percentage)
25% red, 50% pink, and 25% white
In a population with two alleles for Sickle Cell Disease, S and s, the frequency the recessive allele is 0.3. What percent of the population would be heterozygous for the Sickle Cell trait if the population is in Hardy-Weinberg equilibrium?
42%
Mitosis results in __________ with the same number and composition of ____________.
Daughter Cells,
chromosomes
In Meiosis II when cytokinesis reaches completion, it creates:
Four haploid daughter cells
When genes have multiple phenotypic effects?
Pleiotropy
Marty does not have freckles, but both of his parents do. Freckles are a dominant trait. What may be inferred about Marty's parents from this?
Marty’s mother and father are both heterozygous for freckles
In a population with two alleles for cystic fibrosis, C and c, the frequency the recessive allele is 0.6. What percent of the population would be heterozygous carriers for cystic fibrosis if the population is in Hardy-Weinberg equilibrium?
48%
These are attached at the centromere region of sister chromatids at metaphase and are shortened rapidly at the start of anaphase, separating the sister chromatids.
Kinetochore Microtubules
An animal with a diploid number of 36 chromosomes will have ________ chromosomes in its gametes and _________ chromosomes in its somatic cells.
18,
36
Term for when a gene at one locus alters the phenotypic expression of a gene at a second locus
Epistasis
A man who is color blind has the probability of passing that trait (allele) on to:
a) Half of his daughters
b) Half of his sons
c) All of his children
d) All of his sons
e) All of his daughters
e) All of his daughters
What is the Hardy-Weinberg equation for Genotype frequency?
p² + 2pq + q² = 1
During which phases of the Cell Cycle do chromosomes consist of two sister chromatids?
from G2 of interphase through the end of Metaphase
How many pairs of homologues are present one human sperm at the end of Telophase I of Meiosis?
0
What is the disease caused by the substitution of a single amino acid in the hemoglobin protein in red blood cells?
Sickle Cell disease
In which of the following cells would you expect to find a Barr Body?
a) A mature ovum
b) A mature sperm
c) A liver cell of a woman
d) A liver cell of a man with Fragile X
e) A liver cell of a woman with Turner Syndrome
c) A liver cell of a woman
Which of the following is the attachment site for RNA polymerase?
the TATAAA box