Explain what is meant by the sentence “Natural selection can act only on existing traits.”

Answers

Answer 1

Answer: Natural Selection is a process in which certain traits become more common or not. This is determined by the necessity of certain traits and the environment the species finds itself in. Natural selection only acts on existing traits because they are the traits active in a given species in a given environment.

Answer 2

Answer:

Answer:

Natural Selection can only occur to living organisms.

Related Questions

Muscular _______ describes how long or how many times you can lift and lower a given weight.
Which of the following incorrectly matches the term with its location?DNA is found in a chromosome. Chromosomes are found in the nucleus of a cell. Genes are located in a nucleotide. Nitrogen bases are located in the central rungs of a DNA ladder.
Which organelle is used for carrying out photosynthesis?
This is where the genetic information is found in a eukaryotic cell? A) nucleus B) cytosol C) mitochondrial D) endoplasmic reticulum
What is cryptograms

Where does water go after evaporation

Answers

Into the air as water vapor

Answer:

into the air, the evaporation accelerates when you boil water

Explanation:

Scientific models always A. require memorization
B. have limitations
C. comeplete
D. represent old infortmation

Answers

The scientific models always exhibits limitations.

• All the scientific models exhibit limitations as they are not representative of every possible scenario.

• Scientific models are not a substitution for experimentation, they can be used in combination with experimentation to further comprehend a concept, process, or event.

• The scientific models are based on present scientific knowledge and may have to be changed when novel discoveries are made.

Thus, all the scientific models have limitations, the correct answer is option B.

To know more about:

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What is produced in transcription?

Answers

RNA molecules are produced during transcription, the molecules being the ribonucleotides of mRNA

Begins at the edge or the continental shelf

Answers

coast. or continental slope depending which end.

Begins at the edge or the continental shelf would be: Continental Slope

Please take your time to see the picture and answer. (40 Points) ~Biology~In YOUR OWN WORDS, describe the functions of two of the membranes shown in the art of the amniotic egg.

Answers

The amnion, allantois, yolksac, and chorion are fluid-filled membranes that allow the embryo to survive inside the egg. The amnion, which is filled with amniotic fluid and provides the embryo with a stable fluid environment, surrounds and protects the embryo.

What is an amniotic egg?

A water-retaining shelled egg with four membranes that allows reptiles, birds, and egg-laying mammals to complete their life cycles.

There are membranes present, namely:

Extra-embryonic membranes: these are the membranes present in amniotic eggs that are not a part of the body of the developingembryo.
Inner amnioticmembrane: it usually surrounds the embryo.
The chorion: it surrounds the embryo as well as yolksac and aids in the exchange of gases.
The amnion: it helps to protect the embryo from mechanical shock as well as supports hydration.
The allantois: it usually stores nitrogenouswastes generated by the embryo as well as also facilitates respiration.

Thus, these are some membrane that is integral part of the amniotic egg.

For more details regarding amniotic eggs, visit:

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i did this last year lets do this wish me luck it helps how the baby adapts to it mother (2)would be it embryo forms and takes traits from it mother

In an experiment to test the hypothesis that added phosphate will cause marigolds to produce more blooms, the experimenter has two groups of pots planted with marigold seeds. One group gets watered with phosphate added to the water, while the other group gets watered with no phosphate. Both groups get the same amount of water and light.Which is the independent variable in this experiment?
A. amount of light
B. amount of water
C. amount of phosphate
D. amount of blooms on a plant

Answers

Answer:

C. amount of phosphate

Explanation:

First, you need to know what a dependent variable and an independent variable are.

The independent variable is the one that influences the dependent variable to exhibit a response that influences, generating a result that can be observed by the researchers.

The dependent variable, on the other hand, is one that does not influence anything, but is influenced to generate a result, by the independent variable.

In the question above, the researchers want to test the hypothesis that the added phosphate will cause the marigolds to produce more flowers. According to this hypothesis, we can conclude that the researchers want to know the influence of the amounts of phosphate on the flowering of marigolds. In this case, we can say that the amount of phosphate is the independent variable of the experiment.

I think it's B. The amount of water

Other Questions

Bees and butterflies are dependent on flowers for their food. However, the more successful of the two will get the nectar. Which kind of animal interaction does this demonstrate?Mutualism Competition Predation

The process of making RNA from a DNA sequence is called

Which sentence lists events in the cell cycle in correct order, from earlier to later?The chromosomes become longer and thinner; spindle fibers attach to the centromeres. The nuclear membrane reforms; the chromosomes align in the middle of the cell. The chromosomes replicate; the nuclear membrane dissolves. The sister chromatids are separated; the chromosomes condense. Which of the choices below describe one similarity between meiosis II and mitosis? In both processes, sister chromatids are pulled apart. Homologous chromosomes separate in both stages.

Lactase and carbonic anhydrase are examples of what type of substance?