Spliceosome mutations: 1 plus 1 does not always equal 2

Why h2 does not always equal V A/V P?

Over the last decade, there has been a rapid growth in the application of quantitative genetic techniques to evolutionary studies of natural populations. Whereas this work yields enormous insight into evolutionary processes in the wild, the use of modelling techniques and strategies adopted from animal breeders means that estimates of trait heritabilities (h(2)) are highly vulnerable to misinte...

In polyploids , one plus one does not equal two

Polyploidization has occurred often in the evolutionary history of eukaryotes, yet we are only now learning about the genetic and epigenetic events that occur in newly formed polyploids. A long-standing assumption has been that each member of a gene pair would contribute equally to expression levels after polyploidization. This assumption has now been shown to be false in cottons. Adams et al. ...

Does heterochromatin protein 1 always follow code?

Heterochromatin protein 1 (HP1) is a conserved chromosomal protein that participates in chromatin packaging and gene silencing. A loss of HP1 leads to lethality in Drosophila and correlates with metastasis in human breast cancer cells. On Drosophila polytene chromosomes HP1 is localized to centric regions, telomeric regions, in a banded pattern along the fourth chromosome, and at many sites sca...

Monitoring does not always count.

The gross under-resourcing of conservation endeavours has placed an increasing emphasis on spending accountability. Increased accountability has led to monitoring forming a central element of conservation programs. Although there is little doubt that information obtained from monitoring can improve management of biodiversity, the cost (in time and/or money) of gaining this knowledge is rarely c...

Fitness does not equal competence.