3 votes

Is there a practical upper limit to ploidy?

Note that it is customary to restrict posts to a single question, which is easier to answer for these complex topics. I'll do what I can here. I'm going to deal with everything at once and then ...
Maximilian Press's user avatar
3 votes

How does allele dominance work in polyploid organisms?

Dominance works in the same way. However, polyploids have complex inheritance patterns! 1. Punnett square for polyploid inheritance One might assume that you would need a four-dimensional table ...
Macrophage's user avatar
2 votes

Single copy housekeeping genes

There is no single answer for a gene. The most correct thing to do is to use a set of genes across many locus and measure the correlation of copy number across them first, and only use the ones which ...
Artem's user avatar
  • 837
2 votes

Single copy housekeeping genes

The following is probably a good set, it's for Arabidopsis you need to check if it fits with your need. CBP20 Gene Gene Locus: At5g44200 Actin-2 Gene Gene Locus: At3g18780 UBC Gene Gene Locus: ...
alec_djinn's user avatar
  • 3,108
2 votes
Accepted

Single copy housekeeping genes

Just flying from the waist: filter approach: If there is a data source that has the expression data for cells in multiple tissues for any organism i would use that to find the housekeeping genes by ...
user7875084's user avatar
2 votes

an umbrella term for homeolog and ohnolog?

Unfortunately, there is no such term. Look at Glover et al. 2016 for a proposal how to unify the ploidy related homology terms, none of the words describes exactly what I searched for, so I at least ...
Kamil S Jaron's user avatar
2 votes
Accepted

Are there any mammals in which polyspermy produces viable zygotes?

The short answer appears to be "no". The longer answer seems to be dependent on what you mean by "viable". Triploid humans do exist that apparently arise from dispermy, but most such fetuses die ...
Maximilian Press's user avatar
1 vote

Why are odd numbers of chromosomes (triploidy, pentaploidy) less common than even ones (tetraploidy, hexaploidy)?

Sexual reproduction means taking chromosomes from two parents. Most commonly, that means that each parent gives just half their chromosomes to their gametes, such that the offspring will have a full ...
Bryan Krause's user avatar
  • 45.7k
1 vote
Accepted

Pentaploid genotype frequencies

Ploidy number vs number of alleles You seem to be confounding number of alleles with ploidy numbers. You rightly figured the number of possible genotypes for a diploid individuals when there are 3 ...
Remi.b's user avatar
  • 68.1k
1 vote
Accepted

Are polyploidal organisms parasatized by selfish genes? And if not, why not?

In short, being haploid or polyploid should not protect you from Selfish Genetic Elements (SGES). Almost all eukaryotes are polyploid. Plants are the oft-cited example. Wheat, I believe, is hexaploid ...
Joe Healey's user avatar
  • 1,301
1 vote

Is it possible for an organism that is polypoloid with an odd number of sets of chromosomes (e.g. 5 sets) to be fertile?

Yes, it is possible. There seems however to always come up with a cost in fertility eventually of the order of 2/3! You should have a look at Ramsey and Schemske 1998. I don't remember it well enough ...
Remi.b's user avatar
  • 68.1k

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