Pedigree
Mitosis/Meiosis
Heritability
Extensions of Mendel
Misc.
100
What is the inheritance pattern if a trait only passes from affected fathers to daughters?
X-linked dominant
100
In which division does DNA replication NOT occur?
Meiosis II
100
Is eye color an example of a discrete or continuous trait?
What is a discrete trait?
100
What is the term for when a heterozygote shows a phenotype intermediate between the homozygous phenotypes?
Incomplete dominance
100
What is the term for when multiple genes influence a single phenotype?
Pleiotropy
200
How would an affected individual be represented in a pedigree?
Via shading.
200
At which point of mitosis doe chromosomes line up along the center of the cell?
Metaphase.
200
If the F1 variance is 120 and the F2 variance is 200, what is the broad sense heritability?
What is 0.4 or 40%
200
If 2 pink plants are crossed, what will be their genotypic and phenotypic ratios?
1 Homozygous dominant - red
2 Heterozygous - pink
1 Homozygous recessive - white
200
Is expressivity fixed?
No, there is a range of expression.
300
If 15 had a child with a white (un-shaded) square, what would the possible outcomes be?
An unaffected girl or boy.
300
What phase is associated with the cell pinching in the center?
Telophase.
300
True or false: Broad sense heritability can be greater than 1.
False. Broad sense heritability ranges from 0 to 1.
300
In the MN blood system, if an individual has alleles that code for both antigens, what is their phenotypic ratio?
They will simply have both antigens as it is a codominant trait.
300
What gametes can be made from someone with this allelic expression: GgHheeFF
GHeF, gHeF, GheF, gheF
400
If both of the parents in the top row are unaffected, how did they have an affected son (3)?
The mother is a carrier and heterozygous, meaning the son inherited the affected allele on his x chromosome.
400
What is the name of the "arms" that grab the chromosomes?
Spindle fibers.
400
Increased range in this allows greater variation and higher heritability estimates.
What is phenotype?
400
What proportion of female carriers of color blindness will have colorblind sons?
50%
400
If males are more severely affected than females, what is the most likely inheritance pattern?
X linked recessive
500
How did the two affected individuals in row 1 have an unaffected child in row 2?
The parents were likely heterozygous meaning the child is unaffected but still a carrier.
500
What is the term for the point at which microtubules are attached to chromosomes during division?
Kinetochores
500
Which twins share around 50% on average of their segregating genes?
What are DZ or fraternal twins
500
What is the name of the extension that concerns lab retriever dog coats?
Epistasis.
500
Are plants generally haploid or diploid?
Both, it alternates during their life cycle.