chapter 16 review

chapter 16 review - Lecture 26 Chapter 16: Human Genetics...

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

View Full Document Right Arrow Icon
Lecture 26 – Chapter 16: Human Genetics I. Studying Human Genetics A. Cytogenetics 1. study of chromosomes and their role in inheritance B. Karyotype 1. individual’s genetic composition C. Pedigree 1. “family tree” that shows inheritance patterns, the transmission of genetic traits within a family over several generations 2. enables geneticists to predict how phenotypic traits that are governed by genotype at a single locus are inherited 3. identifies 3 modes of single locus inheritance: autosomal dominant, autosomal recessive A. Polyploidy 1. presence of multiple sets of chromosomes B. Aneuploidy 1. abnormalities caused by presence of single extra or absence of a chromosome C. Down Syndrome 1. most common chromosome abnormality in humans; caused by trisomy 21 2. meiotic nondisjunction is responsible for the presence of an extra chromosome D. Klinefelter Syndrome 1. males with two X’s and 1 Y E. Turner Syndrome 1. female with only 1 X chromosome F. XYY Karyotype G. Duplication 1. segment of chromosome is repeated several times
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 / 3

chapter 16 review - Lecture 26 Chapter 16: Human Genetics...

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