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wariber [46]
3 years ago
11

Some closely related species of snails cannot mate because their shells spiral in opposite directions, making it impossible for

their reproductive organs to be aligned. The type of evidence is:______.
Biology
1 answer:
mixer [17]3 years ago
4 0

Answer:

Mechanical incompatibility.

Explanation:

Mechanical incompatibility: occurs when species cannot mate because their reproductive structures are incompatible – In animals with internal fertilization, male and female sexual organs may not fit together – For example, snails of species whose shells have left-handed spirals may be unable to copulate successfully.

Mechanical incompatibility of male and female genitalia is common in animals with internal fertilization. However, our knowledge regarding the precise mechanisms is limited.

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Inga [223]

The correct answer is option D

Both are made up of the same nucleotide, but in a different sequence

DNA is made up of same set of nucleotide only the sequence is different which generates different set of amino acids forming the proteins of different types.Proteins are the building blocks of DNA which are responsible for different characteristics of an individual.

8 0
3 years ago
The amount of strain placed on blood vessels as blood moves through them is known as
inn [45]

Answer:

Blood flow!

Explanation:

Blood flow is the volume of blood flowing through any given vessel, or through the circulatory system as a whole, per minute. This is also called cardiac output, and it's determined by the blood volume pumped during one beat and the number of beats per minute.

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6 0
3 years ago
13) Crossing over is important because it creates ___.
Ainat [17]

Crossing over is important because it creates genetic variability.

<h3>What is crossing over?</h3>

It is the exchange of chromosomal segments between non-homologous chromosomes in a tetrad.

Since chromosomal segments contain genes at different loci, the exchange will increase the genetic variability of the new chromosomes.

Thus, the daughter cells carrying the recombined chromosomes will be genetically variable from not just the parent cell, but fellow daughter cells.

More on crossing over can be found here: brainly.com/question/19671756

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6 0
2 years ago
Molecules that cut dna at specific sequences are known as​
Neko [114]

Answer:

Restriction enzyme, also called restriction endonuclease, a protein produced by bacteria that cleaves DNA at specific sites along the molecule

Explanation:

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3 0
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Explain the cellular functions that occur when antibiotics attacks a bacteria cell
Vlad [161]

Answer:

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Explanation:

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