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Umnica [9.8K]
3 years ago
5

What is the objective of mitosis?. What mechanism(s) in mitosis allow this to occur?. What is the objective of meiosis?. What me

chanism(s) in meiosis allow this to occur?.
Biology
2 answers:
Makovka662 [10]3 years ago
7 0
Mitosis is somatic cell division. In this division, the parent cells divide to form identical daughter cells. Mitosis is divided into different phases, Interphase, Prophase, Anaphase, Metaphase and Telophase followed by Cytokineses. 

Meiosis is the division of germ cells. In this division, the parent cells divide to form haploid daughter cells. Meiosis is divided into two stages: Meiosis I and II. Each stage contains the same phases as mitosis.
qaws [65]3 years ago
4 0
Meiosis is a type of cell division which occurs in gonades to produce gametes.After meiosis number of chromosomes become half.
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Anyone good at Biology could you give me a helping hand please!
andriy [413]
1. Anaphase. In <span>Anaphase the sister chromatids separate from each other to the opposite sides of the cells.

2. </span>Chromosomes would not separate into two nuclei. <span>Mitosis is a process cell division, where one cell divides into two identical cells.
</span>
3. Metaphase I. <span>Meiosis prophase I is the phase in which chromosomal crossing over occurs. The phase after prophase I is metaphase I.

4. </span>Its body cells would have 36 chromosomes, and its gametes would have 18 chromosomes. <span>In the gametes, there are half of the number of chromosomes present in the body cell.

5. </span><span>A species has to adjust rapidly to a changing environment. To adjust to the environment, crossing over is necessary, and it does not occur in mitosis, but meiosis.

6. 50 percent. 
Parents:          Yy      x     yy
Offspring:    Yy    Yy    yy   yy
50 % is Yy  and 50% is yy.

7. </span><span>One parent had white eyes and the other was heterozygous for eye color. The ratio in the offspring is 50-50. The only possibility is the following:
Parents:       Rr     x     rr
Offspring   Rr    Rr   Rr   Rr

8. </span><span>Their fur will be a mixture of red and white hairs. The offspring will be heterozygous. They will have alleles for both red and white hairs and both will be expressed.
</span>
9. Not enough information.

10. <span>Both of the parents' genotype must have been Pp. The genotype of the white plant is pp since it is recessive:
Parents:        Pp     x     Pp
Offspring:   PP   Pp   Pp   pp
One of the four is white.</span>

4 0
3 years ago
Hormones or paracrines that inhibit gastric secretion include ________.
enot [183]

Answer:

This question lacks options, options are:

A) histamine

B) gastrin

C) secretin

D) ACh

The correct answer is C.

Hormones or paracrines that inhibit gastric secretion include <u>secretin </u>.

Explanation:

Hormones pass into the blood that waters the digestive system, go to the heart, circulate through the arteries and return to the digestive system, where they stimulate the production of digestive juices. The hormones that control digestion are gastrin, secretin and cholecystokinin. Secretin is stimulated by intestinal acid at the duodenal level. Its effect inhibits gastric acid secretion, prostaglandin secretion and via somatostatin release. It decreases gastric emptying and stimulates bile and pancreatic bicarbonate secretion.

7 0
3 years ago
Read 2 more answers
How would you categorize a consumer that usually catches and eats prey, but also eats dead animal carcasses?
lianna [129]
Carnivore, hyenas is one example          
5 0
3 years ago
In most hypotheses of early Earth and the formation of life, it is accepted that the atmosphere was a reducing one. This means t
Alona [7]

Answer:

C

Explanation:

It is believed that glycolysis – the first phase of cellular respiration in eukaryotic cells- is considered an ancient biochemical process that early organisms utilized to tap the energy required for cell functions. This is because the process does not require oxygen – because early conditions on earth were anoxic before the great oxygenation event.  It is after the great oxygenation event that the Krebs cycle evolved.

8 0
3 years ago
Need help with this as soon as possible
NeX [460]

Answer:

1) What kind of organisms have this organelle?

->eukaryotic

2)What is the name of the organelle?

->mitochondria

3)Reactants

->oxygen, glucose

4)Products

->carbon dioxide, water, ATP

5)Energy source

->glucose

hope this helps :)

6 0
3 years ago
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