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Setler [38]
3 years ago
5

The many species of tree frogs that inhabit forests in the eastern US maintain their genetic isolation from other species by sev

eral mechanisms, including "singing" slightly different songs. Which type of isolating mechanism does this represent?
a. temporal isolationb. behavioral isolationc. ecological isolationd. mechanical isolation
Biology
1 answer:
Elena L [17]3 years ago
8 0

Answer:

b. behavioral isolation

Explanation:

It is a type of reproductive barrier that can lead to speciation. Behavioral behavior, such as mating rituals as in when two populations of the same species show some difference in behavior, typically in mating rituals

and signals.

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How are the chromosomes different in the cancer cells compared to normal cells?
gladu [14]

Answer:

Genomic Instability

Explanation:

Normal cells have normal DNA and a normal number of chromosomes. Cancer cells often have an abnormal number of chromosomes and the DNA becomes increasingly abnormal as it develops a multitude of mutations.In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it.

3 0
3 years ago
compare the phase of meiosis 1 with the phase of meiosis 2 in terms of the number and arrangement of the chromosomes
zheka24 [161]
I don't know if this is any use to you

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3 years ago
Someone please help!!LEVELS OF ORGANIZATION Identify each of the following as:
miskamm [114]

Answer:

1 community

2population

3ecosystem

4habitat

Explanation:

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6 0
3 years ago
What are the precautions that should be token when using a photometer? please help me​
Maksim231197 [3]

Answer:

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1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

3. Do not use acetylene with the flame photometer

4. Over adjustment of the fuel valve will cause excess flame

Do not position the product so that it is difficult to disconnect from the mains supply

5. Do not cover the chimney whilst in use.

6. Do not block or obstruct ventilation slots /airways

7. Do not operate or handle any part of the product with wet hands

I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0
3 years ago
brainly why is it said that the sun provide either direct or indirect energy to all living things on earth
n200080 [17]
The provide direct energy because they help it grow plants and when plants grow it helps us live. 
But it also provides indirect energy because the sun can cause droughts which is bad because with droughts we dont have enough water to water the plants and with that they dry out and die. 
8 0
3 years ago
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