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ValentinkaMS [17]
2 years ago
10

4. Which phrase best describes the process of crossing?

Biology
1 answer:
Paraphin [41]2 years ago
8 0

Answer: Pairs of homologous chromosomes exchange segments. brainliest

Explanation:

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What must happen before a cell can begin mitosis??
ss7ja [257]
Answer - The chromosomes has to be crucially duplicated and it happens actively during the resting phase or interphase.

Reasoning - During the resting phase or interphase you call it, Is important to have the same exact DNA or Chromosomes to be duplicated. If the chromosomes did not duplicate during the interphase then the split of the cell would be unbalance and uneven and likely to cause defects.

7 0
3 years ago
Please help! (\_/) 10 pts
Dmitrij [34]

Answer:

Genes, chromosomes, and nucleus

6 0
2 years ago
Because they lack well-defined and complex organ systems, we hypothesize that _____ diverged from all other animals early in the
astraxan [27]

Answer:

Poriferans.

Explanation:

The evolution of the organisms has been occur from the simple organisms and leads to the evolution of the more complex organisms. This complexity arises due to the changing environment of the organisms.

The protozoans are the simplest organisms and all the other animal lineage has been derived from the porifera. The porifera are the cellular organisms that  do not have tissue level of organization and simple physiological system. Later, diverse and complex organisms arise from the porifera.

Thus, the correct answer is option (1).

4 0
2 years ago
Compared to the inertia of a 1-kilogram mass, the
avanturin [10]

Answer:

D. 4 times as great

Explanation:

The inertia of an object is the resistance offered by the object to change in its motion or position.

Then concept of inertia is obtained from Newton's first law of motion which states that an object which is not subjected to any net external force will remain its position of rest or constant velocity of motion until some net external force acts on it. The object at rest will then start to move whereas the object moving at constant velocity will experience a change in its speed or direction of motion.

This reluctance to change position is greater, the more massive an object is as well as the higher the speed of motion of the object. Thus, inertia is directly proportional to the mass of the object as well to the velocity of an object in motion.

From Newton's first law, inertia can be calculated as the force to be overcome to mobile an object, i.e. Inertia = F = ma

Where m is mass of object, a = acceleration of the object.

Objects on the earth's surface experience a constant acceleration, g.

Thus for a 1 kg mass, Inertia = 1 × g

For a 4 kg mass, inertia = 4 × g

The inertia of a 4 kg mass is four times as great as a 1 kg mass.

8 0
2 years ago
An unlabeled hierarchical diagram of various astronomical bodies is shown. The labels A, B, C and D can be used to represent the
Sliva [168]

Answer:

Part 1:

The four astronomical bodies one could choose to represent the 4 labels in the diagram are

A - universe

B - galaxy

C - solar system

D - Mars

The universe contains galaxies and galaxies holds solar systems which have planets like Mars

Part 2: D or a planet like Mars is unlike all their other astronomical bodies it does not have other astronomical bodies within it thus, its different from rest.

8 0
3 years ago
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