Which organelles provides cells with energy it need to preform it,s task

2 answers:

7 0

The Mitochondria. The mitochondria is a cell in both plant and animal cells, which contains protein that turns into ATP. ATP is converted into a process that produces energy

inysia [295]2 years ago

6 0

Mitochondria gives the cells energy to perform their tasks

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During meiosis homologous chromosomes often twist around each other break exchange segments and rejoin this process usually cont

Annette [7]

Explanation:

Crossing over, or genetic recombination contributes to genetic variation and diversity.

In early Prophase I of meiosis, crossing over occurs. This is the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined. The chromosome pairs form tetrads held together at chiasmata.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained. Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.

During the process of prophase I one the nuclear envelope containing chromosomes has only partly broken down homologous chromosomes are joined together by proteins and a complex or pairing call synapsis- corresponding genes on chromatids are aligned precisely. The syanpsis allows for crossing over which is the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.

Crossing over contributes to genetic variation and diversity; novel gene combinations in gametes are formed, which are not present in parent chromosomes. Genetic diversity describes all the genetic characteristics or traits within a species.

Learn more about mitosis at brainly.com/question/4303192

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6 0

3 years ago

Please help me with this question please

asambeis [7]

17) cerebellum

18) temporal lobe

iam sorry about the others their answers are not in the paragraph

3 0

2 years ago

hich best describes the carrying capacity of an environment? An area of a desert can support a population of 320 cactus plants.