RPS2 ans

RPS2 ans - Chheavhong Chheung Friday 12-12:50 Anthropology...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chheavhong Chheung Friday 12-12:50 Anthropology 5 Fall 2011 Problem Set # 2 1. To be subject to evolution by natural selection a trait must be transmitted reliably from parent to offspring. A. In Darwin’s day, people believed in a “fluid” or “blending” model of heredity. Why would such a system not support much evolution by natural selection? By blending disadvantageous traits with advantageous traits, evolution would fail to succeed because there will be no variance within the gene pool thus, no adaptation by natural selection. B. How does the behavior of Mendelian genes differ from this (mistaken) blending model? In Mendelian genes, traits are inherited by offspring through natural selection, where advantageous traits are dominant, but in the blending models, all traits are passed onto the offspring, thus no variance in the gene pool. 2. Genes are organized, not just randomly distributed, in the cell nucleus. A. What is a chromosome and what is a locus? A chromosome is a threadlike and organized structure of DNA and protein containing genetic material and nucleotide in a human body. A locus is a specific location of a gene or DNA sequence on a chromosome.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

RPS2 ans - Chheavhong Chheung Friday 12-12:50 Anthropology...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online