Quantitative Biology

1812 Submissions

[2] viXra:1812.0278 [pdf] submitted on 2018-12-16 21:44:40

Computer Models of Brain Tumor Metastasis

Authors: James Bonnar
Comments: 13 Pages.

A computer model of brain tumor metastasis is developed and simulated using the language Mathematica. Diffusion of cancer cells through regions of gray and white matter is differentiated resulting in realistic asymmetric tumor growth. Applications include the precise treatment of a patient’s “future tumor” with focused radiation, and modelling the effects of chemotherapy.
Category: Quantitative Biology

[1] viXra:1812.0166 [pdf] submitted on 2018-12-09 13:37:14

Why Recessive Lethal Alleles Have not Disappeared?

Authors: Jorma Jormakka
Comments: 11 Pages. I have several times tried to submit this paper, please delete the earlier versions.

The article derives the probability for lethal recessive alleles in the case of recessive disadvantage or advantage and discusses why lethal recessive alleles have not disappeared. It is shown that recessive advantage of a lethal gene can be detected by the ratio of heterozygotes and homozygotes. This demonstrates that higher IQ of certain ethnic groups cannot be explained by recessive advantage of lethal genes.
Category: Quantitative Biology