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zalisa [80]
3 years ago
15

Explain why classification is always changing.

Biology
2 answers:
wariber [46]3 years ago
5 0
The answer is that the criteria of classification change whith the improved understanding of organisms around us
larisa86 [58]3 years ago
4 0

Answer:

Classification for organisms is constantly changing because our technology is getting better. Classification used to be based on how similarly organisms appeared (morphological data). However, with better technology, we are able to look at the DNA of different species and are finding that the organisms we once thought to be closely related are not. Additionally, organisms we once thought to be distantly related may have very similar DNA.

Our classification now is based off of evolutionary history or phylogeny. Since evolution is so closely linked with genetics, our classification usually changes with new discoveries in DNA.

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Biology 1 midterm | ID 210093 generated 9 2019​
Pie

Answer:

Hi there!

Please post questions! Thanks

4 0
3 years ago
Predict what the calf produced in a union between each of these parents might look like. Explain your answers.
Charra [1.4K]
We know that purebred means that the organism contains the same alleles for the trait and hybrid means that it contains two different alleles for the trait. Dominant means that it will be shown in a hybrid and a purebred, but recessive traits will only be shown in purebred recessive organisms.

a) The offspring of a purebred white (recessive) cow and a purebred brown (dominant) bull, would be all hybrid brown (dominant). This is because as I stated above, dominant traits are shown when the offspring has both dominant and recessive alleles for the same trait.

b) The offspring of a purebred brown (dominant) cow and a purebred brown (dominant) bull would all be purebred brown (dominant). This is because if both of the parents have only alleles that code for brown color, the only color that the offspring can be is brown.

c) The offspring of a purebred white (recessive) cow and a purebred white (recessive ) bull would all be purebred white (recessive), for the same reason stated above in part b), the only difference being that the alleles are recessive and code for white color instead of being dominant and coding for brown color.

d) The offspring of a hybrid brown (dominant) cow and a purebred white (recessive) bull would be half hybrid brown (dominant) and half purebred white (recessive). This can be seen best if you set up a Punnett Square, which is a diagram that shows allele frequencies in offspring. This shows you that the chance that the offspring get the dominant allele from the mother cow is 50%, thus 50% would be hybrid brown (dominant), as the father can contribute only a recessive white allele. The other 50% would be purebred white (recessive) because the mother cow would be contributing a white allele and so would the father.

Hope this helps! :)
7 0
3 years ago
Which of these statements about light microscopes and electron microscopes is NOT true?
Varvara68 [4.7K]
I believe your answer is B, Because electrons are clinched to protons, most times, therefor there is not an electron microscope, but a ELECTRONIC Microscope will show the organism on a screen. hope that helped some<span />
8 0
3 years ago
The term survival of the fittest means the organism that is blank will survive
bezimeni [28]

Answer:

Properly equipped according to the environment.

Explanation:

Natural selection will kill off those who cannot survive in a given environment

4 0
3 years ago
What can you conclude about DNA from the idea that it is<br> like a cell's "brain"?
Trava [24]

Answer:

A cell cannot function without them

Explanation:

6 0
2 years ago
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