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antoniya [11.8K]
4 years ago
10

How did Redi and Pasteur's experiment contribute to the current scientific understanding of how life on Earth began?

Biology
1 answer:
ladessa [460]4 years ago
5 0

Their experiments rejected  the hypothesis of spontaneous generation.

Redi was the first one who showed with his experiment that the theory of spontaneous generation could not be supported. His experiment with three glass jars with meat (the first was open, the second was covered with a loos netting, and the third was completely closed) showed that the meat cannot produce flies and maggots by itself (meat could not transform into flies as proposed in the theory of spontaneous generation).

Paster approved that cells cannot be generated spontaneously. Pasteur did the experiment with swan-necked flasks and straight-necked flasks (control). Microorganisms fell into the straight-necked flask entering the broth from the surrounding air, so he found living organisms only in that control flask.  


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Please help me! <br> how can invasive species change an ecosystem?
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Answer:

by introducing an invasive species it can drastically change the ecosystem. let's say you have the manatee, it has no natural predators, if you add an invasive species that eats manatees it may cause other things to start eating them too. this would cause the population to dwindle until there are few to none left because the invasive species population will go unchecked because nothing is accustom to eating them

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3 years ago
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What is all necessary for natural selection to occur?
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<u>Necessary for natural selection:</u>

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3 years ago
In guinea pigs, black fur is an autosomal dominant trait, and white is the alternative recessive trait. A Hardy-Weinberg populat
djverab [1.8K]

Answer:

49.14%

Explanation:

The frequency of the heterozygous individuals in the population is therefore: 64/400 = 0.32

Using the Hardy Weingburg equation of a population is equilibrium = p2 + 2pq + q2 = 1

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If p + q = 1; Then p  1 – q = 1 – 0.5657 = 0.4343

Heterozygous individuals are represented by 2pq = 2 * 0.4343 * 0.5657 = 0.4914

0.4914 * 100 = 49.14% of the population which translates to  0.4914 * 400 = 196.56 (197) individuals

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