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Mrac [35]
3 years ago
14

For 1981, 1987, and 1990, how does the frequency of left-mouthed breeding adults compare to the frequency of left-mouthed indivi

duals in the entire population?
Biology
1 answer:
JulsSmile [24]3 years ago
3 0

Answer:

The variation might occur in the population that leads to the evolution of the species. This variation may occur due to natural selection, mutation or recombination.

The variation might change the genotype and allelic frequency of the population and might also change the phenotype of the individual in the population. The breeding adults of the left mouthed in 1981, 1987 and 1990 shows variation and was equally opposite phenotype which is more common in the population.

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I don't what it wants me to answer, if you understand it please help​
Over [174]

Hello!

An initial observation is the first thing a scientist notices about a topic before conducting the experiment. We can see that it is the first thing in the paragraph in this case, that dandelions grow as unwanted weeds in many lawns.

The hypothesis is the guess about the result of an experiment made before the experiment is conducted. In this case, it is that a weed killer (Killimal) would kill all the dandelions while leaving the grass healthy. This is not specifically a guess made by the scientist, but more like a prediction he wanted to verify.

An independent variable is the variable being changed in the experiment by the scientist. Here, it is whether Killimal was sprayed or not.

The dependent variable is the variable being measured, and the one being affected by the independent variable. His observation would be whether the grass and dandelions would be killed. This is because the weed killer would be directly affecting whether or not these would be killed.

The control variables are ones which are kept the same in the experiment as to not interfere with the final results. In this case, it would be the density of dandelions, the amount of sunlight, and the amount the plants were watered. These were kept exactly the same, as they could've affected the dependent variable if changed.

The control group was the one that is not impacted by the independent variable. The control group makes sure that it actually is the independent variable affecting the dependent, and it isn't some outside unknown variable. This would be the plot without the Killimal.

The experimental group is the one being experimented on from the independent variable. This would be the plot with the Killimal.

Hope this helps!

8 0
3 years ago
When a coelom is formed by introducing a gap surrounded by mesodermal cells at the base of the blastula, between the ectoderm an
mariarad [96]
Schizocoelic development

The coelom is a fluid-filled body cavity, where the internal organs are suspended in. It is the cavity between the wall of the body and the digestive tract.

In the schizocoelic development of the embryo, the coelom, called the schizocoel, develops as a split in the mesoderm. The outer layer of the mesoderm attaches with the ectoderm to form a body's musculature, while the inner layer attaches with the endoderm to form the wall of the digestive tract. 

This type of development is commonly found in annelids, arthropods, and mollusks. 

3 0
3 years ago
Which picture represents a cast?
Snowcat [4.5K]

Answer:

its number 1

Explanation:

because the fly is stuck in amber

and the snail shell is in mold and is filled up

and number 2 is not cast

5 0
3 years ago
Describe a problem caused by losses in biodiversity.
Korvikt [17]

Answer:

a big one could be chain effect causing more extinct species

Explanation:

6 0
3 years ago
Scientists think that dolphins and whales may have evolved from a
harina [27]
B is the answer because they have similar body structures.
4 0
3 years ago
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