Questions tagged [adaptation]

Adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation.

19 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
3
votes
0answers
760 views

How do coyotes remove cactus needles from their paws?

Here, in Arizona, coyotes roam and hunt in the desert. While hiking with dogs, I often see spiny bits of Teddy bear cholla cactus on the ground. Dogs often step on these and get stung by the ...
3
votes
0answers
31 views

Did the number of rods changed from ancient time?

Correct me if I am wrong, but I know that rods work under limited light conditions only. But now we are in a world that always have lights everywhere unlike ancient time when humans had to deal with ...
2
votes
0answers
36 views

Mariana Trench fish “how they can thrive under that extreme water pressure is still a mystery”

New Mariana Trench species is the deepest-dwelling fish in the ocean Exactly how they can thrive under that extreme water pressure is still a mystery for now, but these creatures have been sighted ...
2
votes
0answers
54 views

What natural defence mechanism does the human body have against lead poisoning?

It is known that lead ion takes place of necessary ions, like calcium, in the body, but does not perform their task, hence wrecking the system. So how does the body eventually recognise this threat ...
2
votes
0answers
46 views

Does Batesian mimicry rely on constant reinforcement?

If the species being mimicked, the monarch butterfly, for instance, were to become extinct, would the species mimicking it loose all of the benefit gained by their Batesian mimicry immediately? I ...
2
votes
0answers
63 views

Which organisms require the least fluctuation in ambient temperature?

Note that I am NOT asking "which organism can survive the most extreme temperatures." Many extremophiles like the tardigrade can survives extreme heat, but also extreme cold. Many heat adapted animals ...
2
votes
0answers
417 views

Bergmann's rule and Allen's rule: endotherms and ectotherms

Surface area to volume ratio (in terms of heat conservation) is not the only mechanism, but it is still an important mechanism for explaining Bergmann's rule and Allen's rule. Given that, I want to ...
2
votes
0answers
1k views

Why is Pilobolus phototropic?

Pilobolus is a fungal genus whose fruiting bodies consist of a stalk ending in a spore mass that is launched via turgor pressure to disperse the spores. The fruiting bodies grow towards light, which ...
1
vote
0answers
20 views

Reasons for the existence of symporters and antiporters

I'm wondering what is an evolutionary adaptation to the evolution of symporters and antiporters instead of just uniporters. Antiporters might help preserve electrical neutrality by pumping in/out an ...
1
vote
0answers
18 views

Does lack of adaptations for sperm competition necessarily shows the species are monogamous/serially monogamous/polygynous?

On the one hand adaptations for sperm competition, such as large testes, mate guarding, etc. are used to support that female in species are promiscuous. On the other hand we know multiple eusocial ...
1
vote
0answers
24 views

Who were the first authors to talk about local adaptation?

I was curious to read about what Darwin had to say about the existance of locally adapted subpopulations. I discovered to my surprise that the expressions and terms "local adaptation", "spatial ...
1
vote
0answers
490 views

How do migrating geese handle hurricanes?

I live on the East coast of the United States, where we are in hurricane season. This week during my morning bike rides in Charlotte, North Carolina, I have seen migrating Canadian geese. I'm curious ...
1
vote
0answers
103 views

What makes delayed onset muscle soreness stop occurring?

If someone lifts weights or takes a long jog after not doing it for a while, they can experience delayed onset muscle soreness (DOMS). However, when they return to the same exercise days afterwards, ...
1
vote
0answers
23 views

Why is reducing the amount of detail required to remember the location of an object in one's environment adaptively significant?

In Campbell's Biology Chapter 51, question 36 reads: Which of the following shows the adaptive significance of cognitive mapping to animals that employ this type of learning? A) It increases the ...
1
vote
0answers
113 views

Can human change its morphology or anatomy due to ecological changes?

According to Charles Darwin, as the surrounding environment changes, so changes the anatomy or morphology of a specific organism. But nowadays, humans have become very advanced in the technology and ...
1
vote
0answers
207 views

Which are the most extreme artificial environments that lifeforms/ecosystems have adapted to?

I have heard of 'extremophiles', lifeforms that naturally thrive in all sorts of extreme environments. Is there any evidence to suggest that lifeforms are adapting to the extreme environments (such ...
1
vote
1answer
39 views

Is there any evidence for sperm parameters being connected to fitness of the offspring produced by that sperm?

In most (if not all) sexually procreating species the amount of offsprings a male can produce is limited not by the amount of sperm he can produce, but by the amount of eggs his sperm can fertilize (...
0
votes
0answers
18 views

Tradeoff between pathogen adaptability and infectivity

Is there a kind of inverse proportionality relation between a pathogen ability to infect new hosts and its ability to evade the immune defenses/medication? The background: The question is motivated by ...
0
votes
0answers
17 views

Definition of “genomic adaptation”

I have encountered the term genomic adaptation in some literature (for example Sikkink et al. 2017). I am struggling to parse the term, and I have not been able to ...