unit 5 Flashcards
Who are the Bajau people?
The Bajau are a seafaring population in Southeast Asia who have this adaptation. They can hold their breath for over 7 minutes, while highly trained divers from other populations can only hold it for 3 or 4.
What did James Hutton propose?
that the interior of the Earth was hot, and that this heat was the engine which drove the creation of new rock
For what do we know Darwin?
The evolution theory by natural selection is the foundation upon which modern evolutionary theory is built.
what experiment did he propose for his theory?
He conducted several experiments to test whether the seeds of common garden plants could be soaked in salt water, survive, and germinate.
who can we match with this theory?
“organisms altered their behavior in response to environmental change. Their changed behavior, in turn, modified their organs, and their offspring inherited those “improved” structures.”
Lamark
difference between hymlaya people and Andes?
Himalayans have values that are slightly higher as compared with the sea-level control values. In contrast, Andeans living in the same high-altitude range have values that are substantially lower than the sea-level control values. The difference is remarkable. However, several factors, which are known to control tightly the brain blood flow, are strongly determined themselves by high-altitude adaptation. Moreover, they are expressed differently in the two high-altitude population. These factors are hematocrit, which influences blood viscosity and rheology, arterial oxygen saturation, brain metabolism, and nitric oxide (NO) availability.
describe evolution
Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species.
In the past the world had more lactose intolerant people than tolerant
true
Why are we more lactose tolerant than intolerant?
because the tolerant people were the strongest ones so they were the ones that survived and evolved
Why is the life in the Galapagos islands that different and diverse?
The Galapagos Islands are so biodiverse because of the many different habitat zones that can be found across the Islands.
what are vestigial organs?
are rudimentary anatomical structures that are retained in a species despite having lost their primary ancestral function. These structures often lack an apparent purpose, in contrast to the full functionality of these organs observed in closely related and ancestral species.
examples of vestigial organs
-Wisdom teeth
-Appendix
-Coccyx
-Nipple
-Auricular muscles
-Outer ear
-Tailbone
-Biological membrane
-Tonsil
what is a specie?
A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring.
describe gene pool
A gene pool refers to the combination of all the genes (including alleles) present in a reproducing population or species.
difference between divergent evolution and convergent evolution?
Divergent evolution is when individuals in one species, or closely related species, acquire enough variations in their traits that it leads to two distinct new species. Convergent evolution on the other hand is when two unrelated species develop similar traits because they live in similar environments.
