A scientist was collecting data about the number of chromosomes that a certain organism had. He found that most of the skin cells that he examined had a certain amount of chromosomal material, but he found some skin cells with double the chromosomal material. What might be the explanation for these findings

The cells with double amount of chromosomal materials are in G2 phase of the cell cycle.

Explanation:

The explanation for cells with double the amount of chromosomal materials of normal cells is that such cells are in G2 phase of the cell cycle.

The cell cycle consists of two main phases namely;

The interphase is sometimes referred to as the resting phase of a cell and further divided into;

The mitotic phase represents a phase of active division and is further divided into;

Hence, a cell that is observed to have double the amount of chromosomal materials of most of the other cells must have just completed the S phase of the cell cycle during which the chromosomal materials must have been double.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

the correct answer is:

a population changes in response to a change in the environment.