← PGx Nickola Test
5 Written Questions
5 Matching Questions
- Does a crossover in one region affect the likelihood of crossovers occurring in adjacent regions?
- Law of equal segregation
- How would you test for gametic ratio?
- How do you determine linkage?
- a Yes, generally crossovers inhibit other crossover events a.k.a. crossover interference
- b Perform a testcross
- c Two alleles segregates from each other during meiosis; each gamete has an equal probability of obtaining either one of the alleles
- d A dihybrid test cross between a tester parent with only recessive alleles (yyrr) by an F1 generation dihybrid (YyRr) yyrr x YyRr
- e Gene(s) associated with a given trait. Essentially a fixed charactered of an organism (except for rare mutations)
5 Multiple Choice Questions
- DNA must be "read" the readings take place in a timely fashion
- DNA must be able to change.
- DNA must contain information for the development of all tissues, organs, biologial processes characterized by the species
- DNA in the left eye
5 True/False Questions
Linked alleles tend to be inherited → Persistance of linkage between genes
Genes that are inherited together (or mutations that occur together) at a frequency greater than 'random chance'
Changes throughout life are influenced by? → environment and development
crossing is aided by 2 enzymes specific to meiosis → Yes, but they are exact copies of each so there is no exchange in genetic information
When does crossing over take place? → at the 4 chromatid stage of meiosis
What are the expected results in a testcross investigating linkage? → Gametic ratio and recombination frequency in the F2 generation