Synoptical Tables for Determining N. A. Insects

Sex-determining mechanisms in insects.

Sex determination refers to the developmental programme that commits the embryo to either the male or the female pathway. The animal kingdom possesses a wealth of mechanisms via which gender is decided, all of which are represented among the insects. This manuscript focuses on a number of insects for which genetic and molecular data regarding sex determination mechanisms are available. The sex ...

Determining Probabilities Using Tree Diagrams and Tables

At the end of a unit on probability, Ms. Pascal decided to allow her students to determine what kind of test the class would write. All the students’ names were put into a hat. Owen was chosen to spin a spinner divided into three equal regions to determine the kind of test: multiple choice (MC), short answer (SA), or a combination (MC & SA). Ava was chosen to roll a four-sided die to determine ...

A Synoptical Guide to the Study of Obstetrics

A EFFECTIVE ATTRACTION RADIUS: Method for Comparing Species Attractants Determining Densities of Flying Insects

-The catches of bark beetles (Coleoptera: Scolytidae) were compared between attractive traps releasing semiochemicals and passive traps (cylindrical sticky screens hung, at 10 heights of 0.7-11.5 m, on poles). A central attractive-trap pole was surrounded by three passive-trap poles spaced 50 or 100 m away at the apices of an equilateral triangle. The catches of Tomicus piniperda and other scol...

Approximate Counting Scheme for m X n Contingency Tables

In this paper, we propose a new counting scheme for m × n contingency tables. Our scheme is a modification of Dyer and Greenhill’s scheme for two rowed contingency tables [5]. We can estimate not only the sizes of error, but also the sizes of the bias of the number of tables obtained by our scheme, on the assumption that we have an approximate sampler. key words: counting, approximation, #P-com...