biol1201 Chapter 13 meosis and sexual life cycles

biol1201 Chapter 13 meosis and sexual life cycles - Chapter...

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

View Full Document Right Arrow Icon
Chapter 13 – Meiosis and Sexual Life Cycles 13.1 – Inheritance Genes are the genetic information which are passed down from  parents to offspring which collectively are a part of your genome. GAMETES are the “vehicles” that transmit genes from one generation  to another. o Male gametes : sperm; female gametes : eggs Each chromosome is made up of thousands of individual genes (made  up of specific sequences of nucleotides w/in DNA) and the gene’s  specific location in the chromosome is called it’s LOCUS In ASEXUAL REPRODUCTION, a single parent organism can  reproduce without another organism o Organisms that reproduce this way create CLONES, which are  genetically identical to the parent organism o In some cases, there are genetic differences called  MUTATIONS In SEXUAL REPRODUCTION, two parents create individual offspring o Offspring created during sexual reproduction are more often  then not genetically unique compared to those created during  asexual reproduction Each offspring must be genetically similar to their parents and must  contain the correct number of chromosomes  13.2 – Fertilization and Meiosis Each somatic cell (non gamete cells) contain 46 chromosomes o When the individual pairs of chromosomes are arranged in pairs  (longest to shortest), they are displayed through a  KARYOTYPE.   A karyotype is best visible during metaphase of mitosis o HOMOLOGOUS CHROMOSOMES or HOMOLOGUES are 
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.

This note was uploaded on 04/10/2008 for the course ANTH 1003 taught by Professor Demovic during the Spring '07 term at LSU.

Page1 / 5

biol1201 Chapter 13 meosis and sexual life cycles - Chapter...

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