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Alona [7]
2 years ago
13

The false spider mite, Brevipalpus phoenicis, has only two chromosomes. Which of the following pieces of evidence would allow yo

u to determine that this animal is haploid, n=2, and not diploid, 2n=2?
a. If these two mite chromosomes have different genes at different loci.
b. If the somatic cells in these mites undergo mitosis.
c. If these two chromosomes in the mite form tetrads during prophase I.
d. If this mite produces gametes containing only one chromosome each.
Biology
1 answer:
Reptile [31]2 years ago
8 0

Answer:

The correct answer is - a. If these two mite chromosomes have different genes at different loci.

Explanation:

If it is 2n= 2, it means that it is diploid and has two sets of chromosomes in which one set comes from mother and the other from father which means parent's genes contribute to diploid equally. Both sets of chromosomes form homologous chromosome pair. Each homolog of the pair has the same gene at the same loci in diploid and if it has not the same homologous gene at the same loci these are haploid.

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Candace is wanting to be sure that she is doing what she can to prevent the spread of disease. Which of the following should she
Temka [501]

Answer:

Take medicine to destroy the germs.

Avoid contact with other people's bodily fluids.

Eat healthful foods such as fruits and vegetables.

Explanation:

For the spread of disease, there is usually a host who bears the infectious agent, the agent exits through a port of exit from the host, is carried by a mode of transmission, then enters a susceptible second host through a port of entry. To stop transmission, stopping the infectious agent can include;

  1. Stopping the agent from leaving the host through port of exit – e.g quarantine the patient
  2. Curtailing the modes of transmission – e.g killing disease vectors
  3. Protecting the ports of entry in the susceptible second potential host – e.g by improving immunity

8 0
2 years ago
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Changes of seasons require plants and animals to adapt to changes in climate. In one region of the world, however, living things
GrogVix [38]

A tropical forest is a type of biome that shows a little or no change of season throughout the year.

<h3>What is Biome?</h3>

A biome may be defined as a very large area or an ecosystem that is characterized by a particular type of vegetation. Examples include Tropical rainforests, Grasslands, Coral reefs, etc.

Tropical forests include rain forests, dry forests, grasslands, and savannas. The dominant plants which are found in these tropical forests are phanerophytes, epiphytes, lianas, etc.

This biome consistently faces almost the same average intensity of sunlight throughout the year. Hence, the temperature fluctuation in this biome is very mild.

Therefore, a tropical forest is a type of biome that shows a little or no change of season throughout the year.

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6 0
1 year ago
PLEASE HELP ME!
arsen [322]

You got this from edg, am I correct. Well he had evidence by drawing and saw the differences between between normal finches to to the ones of Galapagos island. There were 4 different finches, two had a thick beak and two others had thin beak for small wholes where insects might be hiding. He observed the differences between the beaks.

Explanation:

3 0
3 years ago
By regulating the cell cycle, multicellular organisms gain which of these benefits?
Salsk061 [2.6K]

Answer:

The regulation of the cell cycle helps in wound healing as well as replacing the lost cells by division. Thus, options B and C are correct.

Explanation:

The cell cycle can be described as the process of division and reproduction. The events result in the formation of multiple cells that have been able to deal with the repair mechanism of the body.

With the regulation of the cell cycle, the division process of the cell has been initiated and helps in the formation of multiple cells. The formed daughter cells have been able to heal the wounds effectively by accumulating and removing the dead cell.

The cell cycle has also been responsible for the replacement of lost cells, with the formation of new cells. Thus, options B and C are correct.

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Which of the following supplies a rich network of blood vessels that provides nutrients and oxygen to the superficial tissues of
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