A3 - Diversity of organisms

A.3.1.1

-No two organisms are identical in all their traits

-The patterns or variations are complex and are the basis for naming and classifying organisms

Organism

A living entity that can reproduce

A.3.1.2

-An unchanging group of organisms that share similar outer and inner physical characteristics.

-WRONG! organisms change overtime

A3.1.3

1- Identifies the genus

2- Distinguishes species

-Species in the same genus have similar traits

A3.1.4/ Biological Species Concept

a group of organisms that can breed and produce fertile offspring

A.3.1.5/ Speciation

-The splitting of one species into two or more

-A single act, with populations becoming more and more different in their traits.

• DEBATE

A3.1.6

-Humans have 46 chromosomes and chimpanzees have 48

-Diploid cells have an even number of chromosomes

A3.1.7

A Karyogram is an image of your chromosomes

A3.1.8

-Genome is all the genetic information of an organism

-Organisms in the same species share most of their genome but variations such as single-nucleotide polymorphisms give some diversity

A3.1.9

-Genoomes vary in overall size which is determined by the total amount of DNA

-Variation between species is much larger than variation within a species

A3.1.10

Genome sizes are always different

A3.1.11

123andme, ancestry.com