Fertilization is the union of two gametes resulting in the formation of the zygote. For eukaryotes, the gametes that will be passed on from parents are products of meiosis, which basically reduces the number of chromosomes from each parent by half. These chromosomes would then pair up with their homologs in an attempt to re-establish the ploidy character of the parents.
A hybrid allotetraploid plant (4n=60) was backcrossed to one of the suspected parents (2n=30). WHen the F1 underwent meiosis, the prophase chromosome configuration (where you see synapsis/pairing of homlogs) was examined under a microscope. What would you expect the chromosome configuration to look like?
A. 45 singles
B. 15 pairs and 15 singles
C. 30 pairs and 15 singles
D. 60 singles
E. 30 pairs
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Meiosis concept. You can view video lessons to learn Meiosis. Or if you need more Meiosis practice, you can also practice Meiosis practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Zehnder's class at UMASS.