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fenix001 [56]
1 year ago
5

3.PTC is non-toxic and does not occur naturally. Do you think there is a selective pressure that confers an advantage to those w

ho do taste it
Biology
1 answer:
VikaD [51]1 year ago
4 0

No there is no selective pressure that confers an advantage to those who do taste it.

<h3>What is PTC?</h3>

Despite the fact that PTC isn't found in nature, tasting other bitter substances—many of which are toxins—that do occur naturally has a high correlation with taste sensitivity.

In order to defend themselves from being eaten, plants develop a range of harmful substances. Early humans developed the capacity to distinguish bitter tastes as a safeguard against ingesting dangerous plants. There are roughly 30 genes in humans that produce bitter taste receptors. People may taste a large variety of bitter substances because each receptor can interact with a number of different molecules.

Learn more about Taste with the help of the given link:

brainly.com/question/26220534

#SPJ4

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Organisms that originated in a certain geographic region and can only be found in that region are said to be ____.
aleksklad [387]

Organisms that originated in a certain geographic region and can only be found in that region are said to be endemic.

Explanation:

Endemic organisms are taxonomic species (plants and animals) which originates and distributed only in specific geographic regions. This state of evolution is called endemism.

They are said to be native or indigenous to that particular region which can be an ecological habitat, an entire nation, an island, a mountain range etc. Certain parts are known for majority of their species being endemic like St. Helen Island, New Caledonia Island, Hawaiian Islands, Southern regions of Africa, and Australia.

The species becomes endemic to a particular region because of the presence of certain bio-geographical environmental qualities of that habitat which are favorable to that species.

When these conditions become unfavorable, then species becomes restricted leading to endangerment or extinction of the species.

Examples:

  1. Kangaroo - Australia
  2. Nilgiri Tahr, - Nilgiri Hills, India
  3. The Redwood trees of West Coast of the USA
  4. Plants like kalo, sumac of Hawaii
4 0
3 years ago
Pleaseee help best answer will get brainliest.
gregori [183]
1st and 4th one. 3 could be possible not completely sure its been awhile since i took the class. but the other 2 are impossible.
6 0
2 years ago
Read 2 more answers
Scientists have genetically modified crickets to make them larger and stronger, so as to provide better food for amphibians and
Crank
They would eventually die out because they don’t have the correct adaptations, or they could breed together to make more of the adapted versions. Basically survival of the fittest
4 0
3 years ago
1. What are the independent and dependent variables in each of the experiments?
Dafna1 [17]
  • The independent variables are temperature, airflow, and light and the dependent variable in each of the experiments is evaporation.
  • The schematic representation in the diagram helps in the understanding of the setup for the experiments.
  • The level of temperature, the rate of airflow, and the intensity of light must be controlled in the experiments.
  • A person will not be confident in experiment 3 results as the temperature is the independent variable that alters the results of evaporation.

<h3>What are the four foremost factors of a managed test?</h3>

When possible, scientists take a look at their hypotheses through the use of managed experiments. A managed test is a systematic take look at executed below-managed conditions, which means that simply one (or a few) elements are modified at a time, even as all others are saved consistently. We'll appear carefully at managed experiments within side the subsequent section.

  • In the three experiments, the dependent variable is evaporation, as it changes with the change in another variable.

The independent variable in experiment 1 is temperature, experiment 2 is airflow, and experiment 3 is light.

  • The experiment can be understood better with the representation of the schematic that shows the setup to analyze how the experiment was performed. Therefore the diagram must add the schematic of the experiment.

  • The controlled items in the experiment are the variables that are set at the particular unit to form the result. the controlled item in experiment 1 is temperature, experiment 2 is airflow from the fan, and experiment 3 is the intensity of light.

  • The result of experiment 3 is based on the dependence on the intensity of light keeping temperature constant and controlled. If the temperature is not controlled in the experiment then it may lead to an alteration in the results as it depends on both light and temperature.

  • The flow chart for the increase in pressure affecting the evaporation is given in the image attached.

Read more about variables :

brainly.com/question/2804470

#SPJ1

6 0
1 year ago
What is the total displacement of a child who walks 4 m south , 2 m north ,5 m south , 5 m north
lapo4ka [179]
The answer is 2m south
7 0
3 years ago
Read 2 more answers
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