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3 years ago

What are 3 kinds of mountains

Biology

2 answers:

svlad2 [7]3 years ago

8 0

The three types of mountains are volcanic, fold, and block.

lesya [120]3 years ago

4 0

There are five types of mountains. They are all unique in there own way.

1. Fault block
2. Fold
3. Volcanic
4. Plateau
5. Dome

You can chose any 3 mountain's you would like too!

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What do many scientists believe about the purpose for asteroids.

katovenus [111]

Answer:

Various scientists describe asteroids in different ways:

Some scientists consider it to be rocks which orbit around the sun.
Other consider it to be small planets.

The majority of the scientists agree that asteroids might have come into existence at the time of solar formation. The parts which broke down during the formation of the solar system resulted in the formation of asteroids.

Scientists believe that asteroids might not have a major function in the universe but studying them would be of great benefit. This is because as they are parts broken from the solar system, exploring them will let us know about some unknown features of the other solar system bodies.

5 0

3 years ago

Physical responses which occur when hormones are released into the bloodstream

Tresset [83]

I believe you’re referring to the body’s fight or flight response.

7 0

3 years ago

Which layer of earth is broken up into giant moving plates

stiks02 [169]

The upper layer of the Earth

6 0

3 years ago

How can mutations change the gene pool of a population?

Dvinal [7]

Answer:

Explanation:

The changes in the gene pool occurs from the one generation to another this process is called as the microevolution. The allele frequencies in the gene pool change due to many processes such as gene flow, natural selection, genetic drift, and mutation. In mutation the genetic variations occurs in the genome of the organisms due to change in the genetic makeup of the organisms new traits are produced which are passed on to the new generation and this brings change in diversity of genes in the gene pool.

7 0

3 years ago

The dominant allele H reduces the number of body bristles in fruit flies, giving rise to a hairless phenotype. In the homozygous

DerKrebs [107]

Answer:

a. 3:1 (normal bristles to hairless)

b. 2:1 (normal bristles to hairless)

Explanation:

a. If H allele is present, the fly will be hairless. But H allele is lethal at homozygous condition, so all hairless flies will be heterozygous for H locus (Hh). S allele has no effect on bristle number, but in presence of H allele, S produces a "normal" phenotype and is also lethal at the homozygous condition. So genotypes and phenotypes will be like this:

- SSHH: No viable- Lethal

- SSHh: No viable-Lethal

- SShh: No viable-Lehtal

- SsHH: No viable-Lethal

- SsHh: Normal

- Sshh: Hairless

- ssHH: Normal

- ssHh: Normal

- sshh: Normal

A cross between two normal flies carrying the two alleles (SsHh) will produce (according to the attached Punnett Square):

6 Normal (SsHh, ssHh, and sshh)

2 Hairless (Sshh)

Therefore, the ratio of flies with normal bristles to hairless individuals will be 3:1.

b. When the hairless progeny of the previous cross (Sshh) are crossed with one of the parental normal flies from part a (SsHh), it will be produced (according to the second Punnett Square):

8 Normal (SsHh, ssHh, and sshh)

4 Hairless (Sshh)

So, the ratio of flies with normal bristles to hairless individuals will be 2:1.

7 0

3 years ago