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4 years ago

According to Darwin's theory of evolution, how do new species evolve?

Biology

1 answer:

Vikki [24]4 years ago

8 0

Answer:

According to Darwin's theory of evolution, new species evolved as a result of natural selection.

Explanation:

Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.
Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.
The result of Natural selection could be positive,negative or balancing.
Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.
Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.
It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.

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victus00 [196]

Answer:

Just convert, 37 degrees Celcius into Fahrenheit is: 98.6

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3 years ago

Which type of population growth is shown in this graph? Population of Bacteria mc012-1.jpg

Maslowich

Answer : Binary Fission which grows exponentially.

Explanation : Binary fission actually means binary - consisting two and fission - cleavage into halves. It is one of the modes of asexual reproduction.

This type of fission is majorly observed in the asexual reproduction in prokaryotes. It is rarely seen in some some single-celled Eukaryotes like Amoeba and Paramecium.

Also, In binary fission there is DNA replication and segregation which occurs simultaneously.

This increases the graph exponentially as the growth gets faster and faster with the passing period of time.

A reference image of binary fission is attached in the answer.

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3 years ago

Read 2 more answers

Two genes, A and B, are located 30 map units apart. A mating between an individual homozygous dominant for both traits and one h

Westkost [7]

Answer:

35%

Explanation:

If two genes are 30 map units apart, 30% of the produced gametes will be recombinant.

A mating between an individual homozygous dominant for both traits (AB/AB) and one homozygous recessive for both traits (ab/ab) is conducted.

The F1 will be heterozygous for both genes: AB/ab.

The F1 progeny is then test-crossed to a homozygous recessive individual:

<u>The possible offspring will be:</u>

Parental (70%): AB/ab and ab/ab
Recombinant (30%): Ab/ab and aB/ab

Since 30% of all the gametes produced by the F1 individual will be recombinant, 70% will be parental. As there are two types of parental gametes, each of them will have a frequency of 35%.

<u>The offspring that will have a dominant phenotype for both traits has the genotype AB/ab with a proportion of 35%.</u>

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3 years ago

There are two main functions for polysaccharides in living things. Discuss these two functions, and how the structures of polysa

NNADVOKAT [17]

Two main functions of polysaccharides in living things are:
1. structural components
2. energy storage.

Those polysaccharides that are not easily broken down are used as structural components. Some of them are cellulose in plants and chitin in insects and crustacean.
On the other hand, starch and glycogen are easily broken down, so they serve as energy storage. <span>When energy is needed immediately, they break down to glucose and great amount of energy is released, </span>

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4 years ago

What unit of measurement is most appropriate for measuring the size of atoms?

Naddika [18.5K]

A "micrometer" is the best unit of measurement for measuring the size of an atom.

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3 years ago