biology wuiz

Homologous structure

Features that different species species have in common due to sharing common ancestry

Vestigial structure

Sometimes there are structures in living species that don’t appear to serve a purpose

Analogous structure

The presence of similar features does not always mean two species share a recent common ancestor

Fossils

Are the preserved remains or traces of dead organisms. They can be found on rocks or other substance such as amber or permafrost

Embryonic development

Early stage of development for multicellular organism

Direct observation

Although evolution often occurs at a slow pace, over thousands and millions of years, it can sometimes be observed much more quickly if there are strong selection pressures, or if a highly beneficial mutation occurs. Direct observation of evolution in action provides strong evidence of this biological process.

Biogeography

The study of distribution of organism around the world is known as biogeography

Molecular evidence

When we look inside a cell, we find molecular evidence for evolution

Species

A group of individual organism that are physically similar can interbreed naturally and produce fertile offsprings

Speciation

The changing process where one species splits into two or more distinct new species that can no longer interbreed

Reproductive isolation

The inability of two different species or populations to main and produce fertile offspring often due to biological barriers

Mechanical isolation

This is when two species have reproductive structures or bodies that simply are not compatible for mating

Gametic isolation

This is when two species produced gametes that are unable to fertilize each other, even if they are able to meet in mating

Temporal isolation

This is when two species mate at different times of the year or even of the day. For example, some birds are nocturnal and some are diurnal

Habitat isolation

This is when two species, preferred different habitats, and are unlikely to meet in the wild

Behavioral isolation

This is when two species have different courtship behaviors, for example, different mating, calls or songs

Allopatric speciation

Population of organisms and geographic separated that prevent them to overlap or interbreed

Sympathetic speciation

Populations of organism in the same geographic area, but do not interbreed, but do interact with each other

Extinction

Extinction is the prevent loss of all individuals of a species

Factors of extinction

New predators

new more successful competitors,

new diseases,

a change in the environment of geological time,

a single catastrophic event

speciation

Classification

Classification it’s the sorting of living things into group based on similarities

Modern classification

Domain kingdom, phylum class order, family, genus, and species

Dichotomous

Meaning two parts, a dichotomous key is made up of question with two answers to choose from

Phylogenetic tree

These tree showed the hypothesized and evolutionary relationship between different taxa groups of organism

Phylogenetic

Means relating to the study of evolutionary relationships between organisms