Natural Seclection
in black maned lions
By: Saanvi Yadagiri
Ya it does, their manes get darker and thicker with age due to high levels of testosterone. This occurs due to Darwin’s Theory of Evolution by Natural Selection.
Oh ya, I think I remembered reading about this somewhere. A lion's mane also shows its strength and age and is used as a shield against injury from the teeth of other lions. The size and color of a mane are used as a signal about the male's toughness. But how does this occur due to Darwin’s Theory of Evolution by Natural Selection.
Hey, you’re the other veterinary nurse that just started working at Kruger National Park. My name is Vanita.
Nice to meet you, my name is Sandy. Woah, look at that lion, it has a black mane!
Wow you know your facts! A black maned lion occurs by Natural Selection which favors organisms with advantageous traits, encouraging their survival and reproduction. Adaptation involves inheriting traits which increase survival chances, while speciation results from gathering favorable adaptations over generations. Populations undergoing natural selection experience adaptation and eventual speciation, altering species over time. The black mane in male lions embodies a favorable adaptation passed down, leading to speciation through variations and mutations over an extended period
Oh ok, that makes a lot more sense. Can you explain how the four parts of Natural Selection apply to these lions.
VS.
The second part of Natural Selection is Overproduction of offspring. Lions, like other species, produce more offspring than can survive. This aids in the survival of the fittest by benefiting for ancestry. However, overproduction can disrupt ecosystems by increasing species populations.
Of course I can. Inherited Variation, driven by random mutations, starts off Darwin's Theory seen in male lions with black manes. Numerous mutations in the lion population caused the distinctive dark manes. The black manes can also be seen as adaptations for environmental fitness.
A lioness has cubs about every two years and has two to five cubs in a litter. Overproduction occurs when more than the normal amount of offspring is produced.
Of course, I think overproduction is my favorite part!
Competition, the third aspect of Darwin's theory, affects black-maned lions as overpopulation leads to resource competition. After over producing offspring, lions must compete for limited resources like food, water, and shelter. Adaptations such as a black mane provide a competitive advantage, aiding in acquiring important resources.
Wow, so competition within species ties in with the struggle for survival. I know the last point is Differential Reproductive Success, in which members of a species that are more environmentally fit tend to leave offspring in greater numbers than those who aren’t as fit, but I don't understand what that has to do with the black maned lions.
Well, Differential Reproductive Success, the fourth aspect of Darwin's theory, incorporates the lions intimidating black manes. This assists in their fitness for the environment, leading to greater numbers in offspring. In contrast, lions with simpler manes are less favored, highlighting how adaptations influence reproductive success.
I get it now, thanks so much for your help. I now truly understand how Darwin’s Theory of Evolution by Natural Selection ties in with animals like the black maned lion. I also understand how populations undergoing natural selection experience adaptation and eventual speciation.
No problem, I’m happy I could help!
Natural Selection Project
Saanvi Yadagiri
Created on February 21, 2024
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Transcript
Natural Seclection
in black maned lions
By: Saanvi Yadagiri
Ya it does, their manes get darker and thicker with age due to high levels of testosterone. This occurs due to Darwin’s Theory of Evolution by Natural Selection.
Oh ya, I think I remembered reading about this somewhere. A lion's mane also shows its strength and age and is used as a shield against injury from the teeth of other lions. The size and color of a mane are used as a signal about the male's toughness. But how does this occur due to Darwin’s Theory of Evolution by Natural Selection.
Hey, you’re the other veterinary nurse that just started working at Kruger National Park. My name is Vanita.
Nice to meet you, my name is Sandy. Woah, look at that lion, it has a black mane!
Wow you know your facts! A black maned lion occurs by Natural Selection which favors organisms with advantageous traits, encouraging their survival and reproduction. Adaptation involves inheriting traits which increase survival chances, while speciation results from gathering favorable adaptations over generations. Populations undergoing natural selection experience adaptation and eventual speciation, altering species over time. The black mane in male lions embodies a favorable adaptation passed down, leading to speciation through variations and mutations over an extended period
Oh ok, that makes a lot more sense. Can you explain how the four parts of Natural Selection apply to these lions.
VS.
The second part of Natural Selection is Overproduction of offspring. Lions, like other species, produce more offspring than can survive. This aids in the survival of the fittest by benefiting for ancestry. However, overproduction can disrupt ecosystems by increasing species populations.
Of course I can. Inherited Variation, driven by random mutations, starts off Darwin's Theory seen in male lions with black manes. Numerous mutations in the lion population caused the distinctive dark manes. The black manes can also be seen as adaptations for environmental fitness.
A lioness has cubs about every two years and has two to five cubs in a litter. Overproduction occurs when more than the normal amount of offspring is produced.
Of course, I think overproduction is my favorite part!
Competition, the third aspect of Darwin's theory, affects black-maned lions as overpopulation leads to resource competition. After over producing offspring, lions must compete for limited resources like food, water, and shelter. Adaptations such as a black mane provide a competitive advantage, aiding in acquiring important resources.
Wow, so competition within species ties in with the struggle for survival. I know the last point is Differential Reproductive Success, in which members of a species that are more environmentally fit tend to leave offspring in greater numbers than those who aren’t as fit, but I don't understand what that has to do with the black maned lions.
Well, Differential Reproductive Success, the fourth aspect of Darwin's theory, incorporates the lions intimidating black manes. This assists in their fitness for the environment, leading to greater numbers in offspring. In contrast, lions with simpler manes are less favored, highlighting how adaptations influence reproductive success.
I get it now, thanks so much for your help. I now truly understand how Darwin’s Theory of Evolution by Natural Selection ties in with animals like the black maned lion. I also understand how populations undergoing natural selection experience adaptation and eventual speciation.
No problem, I’m happy I could help!