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sukhopar [10]
3 years ago
5

Several species of fish in the genus Astyanax occur only in the waters in completely dark underground caves. These blind cave fi

sh have no external eyes, but have very tiny and functionless eyes under the skin. Genetic studies clearly indicate that the blind cave fish are evolved from surface-dwelling species with typical and functional eyes. The eyes of these blind cave fish are, therefore, an example of ________
Biology
2 answers:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

a vestigial structure

Explanation:

Vestigial structures are a rudimentary (or even functionless) version of a body part, but they have important functions in a closely correlated or evolutionarily close species, an example of which is the presence of eyes in fish of the genus Astyanax. The existence of these vestigial structures is strong evidence that evolution occurs in organisms, since this structure, today without much apparent function, may in the past have been extremely important to the ancestors of that species.

OleMash [197]3 years ago
7 0

Answer:

A vestigial structure

Explanation:

Several species of fish in the genus Astyanax occur only in the waters in completely dark underground caves. These blind cave fish have no external eyes, but have very tiny and functionless eyes under the skin. Genetic studies clearly indicate that the blind cave fish are evolved from surface-dwelling species with typical and functional eyes. The eyes of these blind cave fish are, therefore, an example of a vestigial structure.

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What is the generic name of poisonous chemicals, very often used in commercial agriculture that are used to kill organisms that
Juliette [100K]

The generic name of poisonous chemicals, very often used in commercial agriculture that are used to kill organisms that either reduce the yield of crops or are harmful to animals are pesticides.

Pesticides are the chemicals used to kill the pests affecting the growth and yield of the crops. Pesticide is a broad term covering various small terms according to the pest being killed. For example insecticide, nematicide, avicide, rodenticide, bactericide, etc. Some chemicals used as pesticides are boric acid, Acephate, Deet, Propoxur, glyphosate, etc.

Commercial agriculture means growing of crops so as to sell them in the market to be utilized by the wide population of any area. Any crop can be grown at the commercial level. These crops do not reach the customers directly by the farmers, instead they are sold to whole-sellers first.

To know more about pesticides, here

brainly.com/question/1386090

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7 0
1 year ago
Low genetic diversity in a population can lead to
patriot [66]
Extinction is the answer.
7 0
3 years ago
Which phrase describes a gene in its simplest form?
vovangra [49]

Answer:

Option-D, a segment of DNA

Explanation:

A gene represents the particular segment of DNA which contains the instruction for the trait of an organism. The nucleotide sequence present in the segment provides the instruction in the form of codons.

The gene is present in the form of its alternative form called alleles which are located on the chromosomes at locus. The alleles represent the variants of the gene and therefore controls the two variety of a single trait.

Thus, Option-D is correct.

7 0
3 years ago
if a person pulls on a cart to the right with a force of 10 Newtons and another person pulls to the left with the force of 3 New
Digiron [165]

Answer:

10N - 3N = 7N

It's been awhile since I've had to do this, so I hope this is the correct way to get the answer

Hope this helps though!

Explanation:

7 0
2 years ago
The soleus muscle is very red in color. Which of these statements about soleus muscle fibers is FALSE?
Bogdan [553]

Answer: The false one is they are large in diameter.

Explanation:

Soleus muscle fiber is a powerful plantar flexor of the ankle joint. It is located on the back of the lower leg and begin at the posterior part of the fibular head and the medial border of the tibia shaft, they have small diameter and the have ability to exert forces on to the angle joint which make them to have a slow twich speed. They are slow to fatigue and are rich in myoglobin.

7 0
2 years ago
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