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olga_2 [115]
3 years ago
9

When does cell differentiation occur?

Biology
2 answers:
Inessa [10]3 years ago
6 0
<span> Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types.</span>
alexgriva [62]3 years ago
3 0
D) when cells are express different genes
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The service box is an area on the court that 1 point the person serving must stand in. the ball must land in to be a playable se
allochka39001 [22]

Answer:

Both players on the serving doubles team have the opportunity to serve and score points until they commit a fault *(except for the first service sequence of each new game).

The first serve of each side-out is made from the right-hand court.

If a point is scored, the server switches sides and the server initiates the next serve from the left-hand court.

As subsequent points are scored, the server continues switching back and forth until a fault is committed and the first server loses the serve.

When the first server loses the serve the partner then serves from their correct side of the court (except for the first service sequence of the game*).

The second server continues serving until his team commits a fault and loses the serve to the opposing team.

Once the service goes to the opposition (at side out), the first serve is from the right-hand court and both players on that team have the opportunity to serve and score points until their team commits two faults.

In singles the server serves from the right-hand court when his or her score is even and from the left when the score is odd.

Explanation:

3 0
3 years ago
What is a molecule called when it has more than one element?
Dahasolnce [82]
They are called compounds
7 0
3 years ago
Read 2 more answers
When you open the door to your house on a cold day, you feel a cold draft. What causes
wariber [46]

Answer:

4. Warm air from the inside moving toward the cold air outside.

Explanation:

A cold draft can be defined as the process in which a current of cold air is being drawn in from the outside. Also, it involves the process in which a current of warm inside air exits or leaves a building through an opening.

This ultimately implies that, when you open the door to your house on a cold day, you would feel a cold draft as a result of the movement between the warm air from the inside moving toward the cold air outside. The warm air that were trapped inside your house would escape through the door due to a difference between the outside (cold) and inside (warm) atmospheric pressure.

Hence, a difference in temperature and atmospheric pressure between the outside and inside air usually causes a cold draft.

<em>Additionally, air typically moves or travels from a region of high pressure to a region of lower pressure. </em>

6 0
3 years ago
Seeing a snake, and then simultaneously running away from it and becoming frightened, is the sequence of events postulated by __
Paha777 [63]

Answer:

A) the cannon bard theory.

Explanation:

the cannon bard theory is an emotion that reflects that trigger feelings and physical reactions at the same time. in this specific example fear would be a feeling and running would be a physical response. could also be described as fight or flight response.

8 0
3 years ago
in his experiments, mendel studied hybrids , or offspring he produced by cross-fertilizing plants that exhibited antagonistic pa
WARRIOR [948]

True. Mendel studied hybrids by cross-fertilizing pea plants.

<h3>Mendel's experiment</h3>

Mendel performed several experiments to study how traits are inherited in living organisms. He used the pea plant as the reference organism.

Mendel was able to make several discoveries as far as trait inheritance is concerned. His works led to the law of inheritance - the law of segregation and the law of independent assortment of genes.

Mendel was able to achieve all these by carrying out cross-fertilization of pea plants based on different traits. For example, a pea plant that is true-breeding for wrinkle seeds was crossed with another pea plant that is true-breeding for smooth seeds.

More on Mendel's experiments can be found here: brainly.com/question/12993314

#SPJ1

6 0
1 year ago
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