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lubasha [3.4K]
3 years ago
6

For natural selection to occur, variation must exist. this is true because without variation

Biology
1 answer:
chubhunter [2.5K]3 years ago
6 0
<span>Without variation, there is no difference between members of a population to be "selected for" in the first place. This is a basic tenet of natural selection. A new trait must arise in order to advance or decrease the fitness of the individual, and hence, its ability to pass on its genes.</span>
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Prior to genetic engineering, humans often used _______ to gain desired traits in animals, such as dogs.
Arisa [49]
Your answer would be, Prior to genetic engineering, Humans often used is called Selective Breeding, to gain desired traits in animals, such as dogs.






Hope that helps!!!! ( Answer: Selective Breeding).
6 0
3 years ago
Name the most important glucocorticoid secreted by the adrenal cornex.
Sergeu [11.5K]

Answer:

Cortisol

Explanation:

The most important human glucocorticoid is the cortisol. It is also called hydrocortisone or stress hormone. It is produced in the zona fasciculata layer of the adrenal cortex of the adrenal glands. It controls blood sugar level between meals. It helps in maintaining blood pressure by controlling salt and water balance.  It also control a response to stress by making more glucose from proteins and fats.

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3 years ago
Tipo especializado de bolsas alargadas que envuelve los tendones cuando atraviesan túneles osteofibrosos
Rudiy27

Answer:

Vainas sinoviales tendinosas

Explanation:

Las vaina tendinosas o vainas sinoviales son mangas de tejido de protección que se encuentran alrededor de las articulaciones o rodean a los tendones. Estas vainas permiten que los tendones se deslicen suavemente, produciendo un líquido (líquido sinovial) que mantiene al tendón lubricado. De este modo, las vainas tienen como función evitar el roce entre el tendón y el hueso. Las vaina tendinosas conforman un revestimiento de dos capas: una interna unida al tendón y una externa de tejido conectivo.

3 0
2 years ago
What is the name of this organelle?​
kotegsom [21]

Answer:

the name of the organelle is Golgi Body. option B.

6 0
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Read 2 more answers
How it’s possible to compress a given amount of air into a smaller space?
anzhelika [568]

Explanation:

A gas is one of the three states of matter on earth and in the universe.

Gases are easily compressible and they can fit into just any container available.

This is because of their fascinating properties.

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Learn more:

Gases brainly.com/question/4592300

#learnwithbrainly

4 0
3 years ago
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