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Lamarck argued, as part of his theory of heredity, that a blacksmith's sons inherit the strong muscles he acquires from his work. [1]Lamarckism, also known as Lamarckian inheritance or neo-Lamarckism, [2] is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.
Cheetahs can go from 0 to 97 km/h (0 to 60 mph) in less than 3 seconds. [106] There are indirect ways to measure how fast a cheetah can run. One case is known of a cheetah that overtook a young male pronghorn. Cheetahs can overtake a running antelope with a 140 m (150 yd) head start.
In evolutionary biology, an evolutionary arms race is an ongoing struggle between competing sets of co-evolving genes, phenotypic and behavioral traits that develop escalating adaptations and counter-adaptations against each other, resembling the geopolitical concept of an arms race. These are often described as examples of positive feedback. [1]
Learn more fascinating facts about cheetahs by watching this video! Even though the Cheetah is capable of reaching speeds up to 60 mph among other athletic feats – their inability to roar keeps ...
The female's home range's size can depend on the prey base. Cheetahs in southern African woodlands have ranges as small as 34 km 2 (13 sq mi), while in some parts of Namibia, they can reach 1,500 km 2 (580 sq mi). Female cheetahs can reproduce at 13 to 16 months of age and with a typical age of sexual maturity between 20 and 23 months. [40]
The earliest African cheetah fossils from the early Pleistocene have been found in the lower beds of the Olduvai Gorge site in northern Tanzania. [7]Not much was known about the East African cheetah's evolutionary story, although at first, the East and Southern African cheetahs were thought to be identical as the genetic distance between the two subspecies is low. [13]
Based on data from 2007 to 2012, the cheetah population in West, Central and North Africa has been estimated at 457 individuals in an area of 1,037,322 km 2 (400,512 sq mi), including 238 cheetahs in Central African Republic and Chad, 191 cheetahs in Algeria and Mali, and 25 cheetahs in the transboundary W, Arli, and Pendjari protected area ...
"Now, here, you see, it takes all the running you can do, to keep in the same place." — Lewis Carroll [4]. In 1973, Leigh Van Valen proposed the hypothesis as an "explanatory tangent" to explain the "law of extinction" known as "Van Valen's law", [1] which states that the probability of extinction does not depend on the lifetime of the species or higher-rank taxon, instead being constant ...