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hichkok12 [17]
3 years ago
14

What hypothesis did darwin investigate by studying the breeding of pigeons with distinctive traits?

Biology
2 answers:
Romashka-Z-Leto [24]3 years ago
3 0
Arwin in 1856 proved that all pigeon breeds do originate from the Rock Dove and through a process of regression you can recreate the Rock Dove, the ancestor of all pigeon breeds. Hopefully that helped
shusha [124]3 years ago
3 0

Answer:

New species can appear gradually through small changes in an ancestral species.

Explanation:

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Spider monkeys live in a <span>tropical rainforest

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The strongest plant cells are?
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<span>Sclerenchyma cells are the strongest. They have a second cell wallwhich is hardened by lignin, making them very tough and durable.</span>
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A researcher investigates a recently discovered species of plant. The plant has vascular tissues and exhibits a sporophyte and a
Anna71 [15]

The plant contains vascular tissue and has an alternation of generation. But, it lacks seeds. So, the plant is a Pteridophyte.

  • Vascular tissues are absent in thallophytes and bryophytes. They are found in pteridophytes, gymnosperms and angiosperms.
  • The sporophyte and gametophyte generation is common in bryophytes and pteridophytes.
  • Seeds are produced in plants that come under the group gymnosperms and angiosperms. The presence of seeds is the main characteristic of these groups.
  • Thallophytes, bryophytes and pteridophytes lack seeds. The reproduction in plants that comes under these groups occurs with the help of spores.

Thus, the recently discovered species of the plant should be classified based on the presence of vascular tissues, gametophytes and sporophytes. As pteridophytes contain vascular tissues, sporophytes and gametophytes and lack seeds, the plant is a pteridophyte

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6 0
2 years ago
The surface indentation that separates the atria from the ventricles is known as the?
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Atrioventricular septum is the surface indentation that separates the atria from the ventricles.

<h3>What is an atrioventricular septum? </h3>

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The tricuspid and mitral valves seem cruciate on a four-chamber view when both septa are converging, earning the term crux of the heart, cardiac crux, or crux cordis.

The atrioventricular septum, a septal component dividing the atria from the left ventricle, is a distinctive anatomic characteristic of the atrioventricular junction.

Therefore, the atrioventricular septum is the indentation that separates the atria from the ventricles.

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Base substitutions, deletions and insertions.
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