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vaieri [72.5K]
3 years ago
10

WILL GIVE BRAINLIEST!

Biology
1 answer:
scoray [572]3 years ago
5 0
Darwin went to the continents of Africa and South America, wherein both of them have a tropical grassland/Savanna biome. The grasslands in these continents gave him a chance to notice that species do vary globally. He observed the similarities between the different large, flightless birds species–rheas, ostriches, and emu.
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The second order of chromatin packing occurs when nucleosomes coil together to form a fiber that is 300 nm in diameter. True Fal
Nina [5.8K]

Answer:

The given statement is False.

Explanation:

During the prophase stage of mitotis, the chromatin starts becoming more condense. Histone protein is a basic protein which is responsible for initial and basic packaging of chromatin into nucleosome.  

The second level of chromatin packaging occurs when the nucleosomes are arranged in the fiber which has a diameter of about 30nm. Each nucleosome is attached with H1 histone and nucleosome fiber coil to form a solenoid structure which has a diameter of 30nm. Therefore the statement is false.

5 0
3 years ago
True or False earthquake always occurs where there is a build up of friction along a fault?
Andre45 [30]
<span>True. Earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. This reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. These are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.</span>
8 0
4 years ago
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Which action is an important part of scientific methods?
kherson [118]

Explanation:

making hypotheses is a scientific method

4 0
3 years ago
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I need help with this
lord [1]

A. interphase

B. prophase

C. metaphase

D. anaphase

E. telophase

sorry for the wait once again

1. centrosomes

2. spindle poles

3. sister chromatids

4. kinetochore

5. cleavage furrow

6. nuclear envelope

7. mitotic spindle

8. cohesion proteins

9. chromosomes

10. condensed

5 0
2 years ago
Students should come into contact with chemicals only if
kirill115 [55]
If wearing proper gear
5 0
3 years ago
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