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Elena L [17]
3 years ago
5

Brings dry, clear weather

Biology
1 answer:
Alborosie3 years ago
4 0
Summer? Idek your question
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At a basic level mitosis and meiosis are similar processes. However, they have very different outcomes. Which of the following s
Dafna1 [17]

Answer: C. Homologous chromosomes are separated in meiosis but not in mitosis.

Explanation: There are two main types of division that take place in eukaryotic cells, mitosis, and meiosis. Mitosis is the type of division that is used for growth, repair, and replacement of tissues. Therefore it is not necessary that the cells have  different chromosome numbers or are varied genetically in the daughter cells in the case of mitosis.

Meiosis is the division that takes place to form the gametes for sexual reproduction. It is important in the first stages of meiosis I, to introduce variation and to halve the chromosome number.

Chromosomes numbers are halved (from 46 to 23) during meiosis I because the gametes (sperm and egg) come together and fuse during fertilization to form a zygote. When this fusion occurs (23 from the zygote and 23 from the egg), the chromosome number needs to be returned to that of the parent cell (46).

<h2>Genetic variation is introduced during synapsis which only occurs in meiosis, not mitosis. Homologs exchange genetic information during crossing over of synapsis. Entire chromosomes also separate during meiosis I. </h2>

At the end of meiosis, four genetically unique cells are  produced with half the number of chromosomes as the parent cell (23 cromosomes) . After the process of mitosis is completed, two cells genetically identical to each pther are produced and have the same number of chromosomes as the parent cell (46 cromosomes).

Genetic variation is actually important because of changing environmental conditions.

6 0
3 years ago
The length and complexity of a food web in the Arctic would be ____ when compared to one in the tropical rainforest.
Vlad [161]

Answer:

The correct answer is - option A. short and less complex.

Explanation:

A food web is a network of many food chains. The food chain is one pathway that describes the path of the animals finds food, it is linear representation. Food web shows all the plants and animals in connection with each other in the food web.

In the Arctic, biodiversity is comparatively low with fewer species of flora and very less number of fauna that include caribou, hare, musk ox pika, and insects are the primary consumers.

Secondary consumer eats herbivores and these organisms are normally are top trophic levels in arctic include fish and polar bear. So the consumers, primary consumer and predators or secondary consumers form a short and less complex.

Thus, the correct answer is - option A. short and less complex.

4 0
3 years ago
In 3-5 sentences write a description of how the 4 terms, DNA, chromosomes, genes and traits, are related and/or work together to
wel

Answer:

Please find the explanation below

Explanation:

Deoxyribosenucleic acid, commonly called DNA is the stored form of genetic material in living cells. It contains the information needed by an organism to survive. A segment of the DNA that encodes the necessary information needed to produce a particular protein that determines a trait is called GENE.

The DNA consists of long polynucleotide chains, hence, due to Its length, it cannot git into the cell. The cell then devises a means by wrapping the long strands of DNA around certain proteins called HISTONES. This initially forms a NUCLEOSOME structure, then continuous wrapping around histones and condensation forms the visible CHROMOSOME structure.

Now, the CHROMOSOME contains the DNA molecule, which contains protein-coding segments called GENES. The information contained on the gene is used to produce a protein that is responsible for a particular TRAIT in the organism.

5 0
3 years ago
A scenario where a cell may need to perform a form of endocytosis
navik [9.2K]

Endocytosis is a term used to describe a process of active transport that facilitates the movement of particles such as molecules and parts of a cell or the whole cell into a cell.The best scenario for the process occurs when a cell needs to pass/transport molecules that are large and cannot move through the membrane passively.

5 0
3 years ago
What is a dermal tissue?
Ad libitum [116K]
The dermal tissue of a plant is the extremely thin outer layer of the soft parts of a plant. It is also known as the epidermis. Epidermal cells are flattened and very close together. Stomata are found in the dermal tissue. ... Adaptations of the dermal tissue include epidermal hairs and root hairs.
4 0
3 years ago
Read 2 more answers
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