Which process MUST occur before mitosis and meiosis can occur

2 answers:

7 0

Mitosis is the process that facilitates the equal partitioning of replicated chromosomes into two identical groups. Before partitioning can occur, the chromosomes must become aligned so that the separation process can occur in an orderly fashion. The alignment of replicated chromosomes and their separation into two groups is a process that can be observed in virtually all eukaryotic cells. Interfase must happen before mitosis can begin. Interfase is when the parent cell stores energy and becomes bigger so it can make the two daughter cells.

melamori03 [73]3 years ago

6 0

Dna replication MUST occur before mitosis and meiosis can occur

You might be interested in

It is said that the protoplasm cannat be analysed chemically.Why?

vlada-n [284]

It couldn't be analysed chemically because it's chemical composition is to complex. It would be hard for us to analyse them because once it has been removed from the organism, it ends as protoplasm only.

8 0

3 years ago

The map below shows the range of three types of grasslands in the United States. Some grasses of the tallgrass prairie grow to 6

muminat

More rainfall leads to the growth of the grass in a tallgrass prairie to grow so tall.

Answer: Option B.

Explanation:

The tallgrass prairie consists of big and little blue stem, switchgrass, and Indian grass. These were the species which thrive in the area which receive rainfall in large amount. The rainfall in these areas are in the amount of 30-40 inch annual precipitation.

Because these areas receive rainfall in such high amount, the grasses grow very tall. The height of these grasses reach to approximately 6-8 feet in height.

6 0

3 years ago

Which organelle is responsible for digesting materials and cleaning up the cell of wastes?

nlexa [21]

Answer:

Lysosomes

Explanation:

Lysosome are among the organelles in a eukaryotic cell. Lysosomes are formed by the golgi bodies or the golgi apparatus.
The role of lysosomes is to digest and destroy old and worn out organelles together with cellular wastes. In other words Lysosomes break down food molecules, waste products, and old worn out cells or organelles.
They contain powerful lytic enzymes and and acids which help in the digestion and recycling of cellular materials.

5 0

4 years ago

7) How many alleles will a gamete have for any one gene?

pantera1 [17]

Answer:

Explanation:

Each trait of an organism is determined by discrete units called genes and individuals carry two alleles for each gene. (Mendel didn't actually discover genes though). Each gamete of an individual carries only one allele of each gene (this is Mendel's Law of Segregation).

8 0

3 years ago

You’ve likely heard of polar bears (Ursus maritimus) and grizzly bears (Ursus arctos horribilis). Have you heard of a grolar bea

Karolina [17]

Answer:

allopatric speciation.

Explanation:

When the population belonging to the same biological species becomes separated from each other due to some geographical factor such that no gene flow can occur between the two separated populations then the speciation that occurs on account of this is known as allopatric speciation.
The geographical isolation that separates the two groups can be the origin of a mountain, the formation of islands, volcanic eruption, etc. which prevents the two groups fro mating with each other and ultimately causes their lineage to speciate.
Although the two separate populations are unable to mate due to geographical factors, if the two populations are allowed to mate again, given that they have not been separated very long ago, they can give rise to hybrids.
Thus, in the given question it is given that polar bears and grizzly bears have been mated and hybrids have been produced and this points out to the fact that polar bears are result of allopatric speciation.

7 0

4 years ago