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Crank
3 years ago
14

1) What is a sphincter muscle?

Biology
1 answer:
serious [3.7K]3 years ago
7 0

Answer:

1-A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body.

2-Sphincters are specialized muscles that are located at the upper esophagus (upper esophageal sphincter (UES) and the gastroesophageal junction

Explanation:

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Martha has a widow's peak (dominant trait) and attached earlobes (recessive trait). Martha's dad had a straight hairline and una
Readme [11.4K]

Answer:

3/8

Explanation:

Martha has a widow's peak (dominant trait) and attached earlobes (recessive trait).

Martha's dad had a straight hairline (ww) and unattached earlobes (Ee, because she has the recessive alleles ee and both parents give us one allele).

This tells you that martha has a mother with at least one of both alleles dominant for widow peak and at least one recesive allele of attached earlobes

So, martha's alleles are: Ww and ee.

If she marries a man that is heterozygous for both traits (Ww and Ee) the probabilitys are

Ww Ee x Ww ee: WWEe, WwEe, wWee, and wwee

8 0
3 years ago
How can dna sythesis occur in both directions from a replication origin
rosijanka [135]

at the replication fork, you have 2 DNAP's. One is on the leading strand and the other is on the lagging strand. Now you into a problem of DNAP's not moving in sync with each other. The synthesis on the leading strand is much faster than the lagging strand because the lagging strand needs to make an RNA primer and then extend the primer (okazaki fragment synthesis/maturation). So DNA synthesis will not be complete on one of the strands.  

There is a model that explains what happens during DNA replication. The model is called the Trombone model.  

You have 2 DNAP's linked together by a tau protein (2 tau proteins) and both tau proteins are bounded to beta clamp loader. This makes the holoenzyme complex.

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3 years ago
In what way is binary fission different from mitosis?
Aloiza [94]

Binary fission is asexual reproduction where singled cell organisms copies of themselves. Mitosis is cell division that a cell and results in two newly formed cells that are identical. Binary fission is making copies of a cell, and mitosis is splitting a cell into two new indetical new ones.

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radio frequency is the transfer of energy by radio waves

Explanation:

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Es de ciencia y tecnologia pero ayuden xd
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como estas muy bien y tu/

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