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Vlada [557]
3 years ago
15

If a diploid cell has 20 chromosomes, how many sister chromatids will be present

Biology
1 answer:
Gnom [1K]3 years ago
6 0

Answer:

92 chromatids

Explanation:

During phosphate, the nuclear envelope of the cell (which is where the 92 chromatids are contained) begins to break down. The centrioles, which are the only present in animal cells, separate and each moves to an opposite end of the cell

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Natural selection is based on all of the following except a. genetic variation exists within populations. b. the best-adapted in
goldfiish [28.3K]

Individuals adapt to their environments and, thereby, evolve

Explanation:

Natural selection is the main process which advances evolution by aiding organisms to survive and produce more offspring through adapting more to their environment. Mutations, gene transfer, and genetic variations also drive evolution.

Both natural selection and evolution work on genetic behaviors in populations rather than individuals. Both natural selection and evolution are involved in generating changes over generations.  Examples of evolution is the disappearing of tail bone, decreased head size and for natural selection example is the long and short necked giraffe.

4 0
2 years ago
honeybee is considered as the most useful insect for human beings.justify this statement with any three reasons​
Oduvanchick [21]

Answer:

  • Polinate plants, trees and food
  • They give us honey
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6 0
2 years ago
Plants that are located inside typically have
enot [183]
Aglaonema.
Dracaena.
Ferns.
Philodendrons.
Palms.
Pothos.
Spathiphyllum.
Succulents.
4 0
2 years ago
How does cyanobacteria help form soil crusts?
bagirrra123 [75]
Biological soil crusts<span> are communities of living organisms on the </span>soil<span> surface in arid and semi-arid ecosystems. They are found throughout the world with varying species composition and cover depending on topography, </span>soil<span> characteristics, climate, plant community, microhabitats, and disturbance regimes.</span>
7 0
3 years ago
Question 4 .Which process is a physical change?
ohaa [14]

Explanation:

Which process is a physical change?

c. melting ice

If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same. Which of the following has occurred?

d. a physical change

A substance made up of two or more elements that have been chemically combined is called

c. a compound

Of the three ordinary states of matter, gas is the only state that

c. is highly compressible

In which state of matter do the particles have the most energy?

b. gas

Elements in group 18 called Noble Gases are highly reactive because they have 1 valence electron.

false

Atomic mass is the sum of

b. protons and neutrons

The current model of the atom is known as

a. Rutherford's model

Most elements on the periodic table are

d. metals

Which is not a quality of a non-metal?

a. shiny

Hope this helps.

3 0
3 years ago
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