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blagie [28]
3 years ago
5

Which group of fish do scientists believe amphibians evolved from?

Biology
1 answer:
Alex73 [517]3 years ago
4 0

Answer:Amphibians evolved during the middle of the Devonian period (416 to 359 million years ago) from the lobe-finned fish of the vertebrate class Sarcopterygii. Species within the genus Ichthyostega (members of the Labyrinthodontia subclass) are considered by some scientists to be the earliest amphibians.

Explanation:

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Elements such as silicon, mercury, arsenic, tellerium cannot be classified as metals or non metals. We call them...
DiKsa [7]

Answer:

metaloids

Explanation:

metaloids an element whose properties are intermediate between those of metals and solid non metals.

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3 years ago
How are osmosis and diffusion alike
hichkok12 [17]
Osmosis is the movement of water and is always the movement in the membrane. Diffusion is the movement of molecules
8 0
4 years ago
What genes direct the
Valentin [98]

Answer:

a. hox genes.

Explanation:

HOX genes have the following functions:

  • HOX genes are the homeobox subset.
  • They specify the areas of the embryo's body plan along the animal head-tail axis.
  • They are encoding Hox proteins that specify the position characteristics and ensure that the right structures form at the right position in the body.
  • They regulate high-level executive genes, such as transcription factors and intracellular signaling molecules, which adhere, number, form, and growth to cells.

The vertebrates are highly preserved.

The clusters and other genes occur uninterrupted.

Evolutionary, the heterogeneous regulatory areas between the genes most previously present are larger and more preserved than those present at the other ends of the clusters.

The characteristical feature is that these are homeodomain proteins with a highly preserved area of DNA binding encoded with homeobox gens.

3 0
3 years ago
Which element is found in nucleic acids but not in amino acids
nikitadnepr [17]

Answer:

d. phosphorus

Explanation:

Phosphorus is the only element that is identified with nucleic acids.

Hope This Helped

6 0
2 years ago
Which of the following sea turtles is not typically found in Florida?
Arisa [49]
I believe the correct answer from the choices listed above is the third option. The sea turtle that is not typically found in Florida is a flatback. A loggerhead is abundant in Florida, leatherback can be found anywhere and the green can be found also in Florida. Hope this answers the question
7 0
3 years ago
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