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jek_recluse [69]
2 years ago
5

1. Tetrapods are ____________________. Examples of tetrapods include ___________________,

Biology
1 answer:
Angelina_Jolie [31]2 years ago
3 0
1. tetrapods are ( four-limbed animals ) . examples of tetrapods include (extanct and extinct amphibians , reptiles , and mammals )
2. Tetrapods first appear in the fossil record ( 367.5 ) million years ago .
3. Charles Darwin predicted that tetrapods evolved from ( a finned organism that lived in the water) . What observation leads do that hypothesis?( they have “fleshy fins” and “lobe fins”) .
5. Fish use ( gills ) to breathe underwater .
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Which would most likely lead to a change in the genetic structure of a population?
Rina8888 [55]

Answer:

The answer is C.

A 5 percent increase in the reproductive success of some genotypes, but a 5 percent decrease in the reproductive success of other genotypes

Explanation:

Incomplete question, here is the full question: https://quizlet.com/153540854/biology-107-part1-flash-cards/

For the genetic structure of a population to change, we can either depend on natural selection or mutations but there has to be an imbalance.

The answers given in the options A and B are referring to changes in genotypes which surely affects the genetic structure of the population but the way these options are given is in equilibrium, meaning they create and imbalance but then counter that with something else.

In option C, some genotypes get a 5 percent increase while some get a 5 percent decrease in their reproductive success, which will most likely result in a change in the genetic structure of a population.

I hope this answer helps.

3 0
2 years ago
Read 2 more answers
The bony projection that occurs bilaterally on the posterior aspect at mid-thorax is the ________ of the scapula.
satela [25.4K]
The inferior angle of the scapula is the bony projection that occurs bilaterally on the posterior aspect at the mid-thorax.

The inferior angle of the scapula is formed by the unification of the medial and lateral borders of the scapula. It is thick and rough and its posterior or dorsal part serves as an attachment to the Teres major muscle, to which the latissimus dorsi glides over.
6 0
2 years ago
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During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine, _____, that activates T helper c
Rom4ik [11]

Answer:

During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine, interleukin-1, that activates T helper cells

Explanation:

Macrophages interact with T cells in order to generate T cell activation in target organs, and are themselves activated by inflammatory messenger molecules (cytokines) produced by the T cells.

Macrophages produce toxic chemicals, such as nitric oxide, that can kill surrounding cells.

During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine, interleukin-1, that activates T helper cells

4 0
2 years ago
Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of the
Yakvenalex [24]
The process that is vital in the recycling of carbon, nitrogen and phosphorus is decomposition.
During decomposition, organic matter from dead organisms is broken down. This break down yields simpler and smaller substances from the more complex ones that were present in the organism.
Carbon is released from the carbohydrates and fats that were present in the organism. Nitrogen is released from the proteins that were present and phosphorus is released from the nucleic acids.
6 0
2 years ago
To visualize the structure of DNA, which has a width of 10 nm, which microscope would be best
damaskus [11]

Answer:

Electron microscope

Explanation:

Instead of using light, it utilized a beam of electron for illumination. Because an electron beam has a shorter wavelength than light (up to 100, 000 times shorter), they have a higher resolution power and are therefore able to view sub-cellular structures including DNA.

5 0
2 years ago
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