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REY [17]
4 years ago
12

What is positive feedback? What is negative feedback? Biology wise

Biology
1 answer:
Simora [160]4 years ago
6 0
Http://study.com/academy/lesson/positive-negative-feedback-in-biological-systems.html
Here's a link :)
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Which theory best explains the present arrangement of continents, oceans, and landforms on Earth?
Pepsi [2]

The correct answer is:

Plate tectonic theory

I am an online student, this was a question on my quiz and I got it right.

You're welcome.

Also, to the member above me who also gave the correct answer, Good job!

4 0
3 years ago
Read 2 more answers
A family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on the
nirvana33 [79]

The term that would best define the fish added to the pond is introduced species.

<h3>What is introduction of a species?</h3>

Adaptation to the conditions of the place in which it was inserted, the absence of predators and degradation are the main factors that lead an exotic species to become invasive, competing with native species for resources and causing a great impact on the community.

In this case, the introduced species are exotic species which has arrived there by human activity, may even be harmful to the entire ecosystem because they can break the delicate equilibrium of the ecosystem.

See more about introduced species at brainly.com/question/21452505

#SPJ1

3 0
2 years ago
Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered p
Rom4ik [11]

Answer:

genes for flower color and edge shape are linked. They do not assort independently.

Explanation:

<u>Available data:</u>

  • test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.
  • serrated leaves → dominant trait
  • smooth edges → recessive trait
  • purple color → dominant trait
  • white color → recessive trait
  • F1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.

There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.

To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent

 

5 0
3 years ago
Human height is variable with a wide range of phenotypes because it is affected by the
cupoosta [38]

Answer:

polygenic trait

Explanation:

polygenic trait

5 0
3 years ago
HURRY PLS!! The structure of DNA resembles a twisted ladder. Which structural components from the rungs of the ladder
Zina [86]

Answer is: C

Hopefully this helps you, have a nice day! :)

in addition to that; (it's pairs of 4 types of (c))

6 0
3 years ago
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