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Nat2105 [25]
3 years ago
15

Explain how at least three pieces of evidence support the theory of evolution.

Biology
1 answer:
otez555 [7]3 years ago
3 0

Answer:

1. Fossil evidence

2. Homologous similarities.

3. Molecular evidence

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Team of scientists is studying several plant species that they think could become new farm crops. The scientists want to apply s
Ratling [72]

Answer:

B. very high genetic variation

Explanation:

Selective breeding is the process by which crops or animals with desired phenotypic traits are chosen to produce offspring, which will contain the desired qualities. In this case, a group of scientists is trying to apply the principles of selective breeding to develop a particular crop plant.

This goal of producing a useful crop plant by the scientists can only be achieved when the plant species in question possess a HIGH GENETIC VARIATION i.e. difference in genetic constitution of individuals of the same species. This allows the individuals in the population to survive better.

7 0
3 years ago
Read 2 more answers
At the beginning of Unit 3 we saw the example of the pygmy seahorse, whose offspring can change their body color, depending on t
Brut [27]

Answer:

Seahorses are between the sea animals that may modification color. Such variations camouflage the creatures if not obscure or perhaps frighten possible predators. Color variations facilitate seahorse’s link emotions and intentions, particularly throughout suit. Whereas these alterations are stunning and infrequently seem seamless, they're truly the merchandise of complicated interactions between the seahorse's brain and small organs carried within its skin.

Anatomy

Seahorse organelles, known as chromatophores, are enclosed at intervals their skins. These tiny, sack like organs contain variety of pigments and may expand or consent response to a spread of stimuli, inflicting the seahorse to vary color. Typically, seahorses carry solely a couple of chromatophore diversities, so completely different colors are created through the blending and matching of accessible pigments.

Building Color

All of the colours to that a seahorse will modification are derived from 3 or four basic stains contained in several chromatophores. The pigment cells of those chromatophores are sometimes stacked on prime of every alternative or clustered along in teams. the colour a seahorse displays is predicated on sort, combination and attentiveness of those cells, moreover as their proximity to the skin's surface.

Brightness and Tone

Muscles hooked up to chromatophores will push stain cells toward, or pull coloring cells off from, the surface of a seahorse's skin. Once the coloring is on the point of the skin's surface, the animal's color is brighter and splendid. In turn, once the pigment attracts off from the skin's surface, the ensuing color is a smaller amount saturated and somewhat boring.

Speed of modification

Depending on the stimulant that causes a seahorse to vary its color, chromatophores are measured by the seahorse's system or by its secretion fluctuations. once the system activates chromatophores, comparable to in life-and-death things, the animal's color changes quickly. once chromatophores are activated by secretion fluctuations, comparable to once a seahorse is suit a mate, the animal's color in its place changes somewhat slowly.

Both of them aren't subjected to action because the color modification in ocean horse are influenced by system and secretion system.

8 0
3 years ago
List two types of organelles
kari74 [83]
mitochondria and the Golgi apparatus i hope that's helps
4 0
3 years ago
The __________ perspective on the family is characterized by concepts linking psychosocial factors to physiology, genetics, and
Neko [114]

Answer:

The correct answer is -Biosocial perspective.

Explanation:

In the last few years, the research and thinking on biosocial perspectives on the family come in light. The biosocial perspective on the family is characterized by concepts or laws related to various psychological factors to evolution, genetics, and physiology.

Three major developments that are contributed in this perspective are findings of proximate biological interplay, advances in evolutionary thinking and alteration in the field of studies related t the family.

Thus, the correct answer is - the biosocial perspective.

7 0
3 years ago
During what period of life does skeletal mass increase dramatically
Svetradugi [14.3K]
Skeletal mass increases dramatically during childhood and adolescence, and decreases dramatically at the beginning of the fourth decade of life and decreases with age, with an exception of the skull.

Hope this helps! Have a BLESSED day! :-)
7 0
3 years ago
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