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Temka [501]
4 years ago
5

What body structures is one cell thick

Biology
1 answer:
alekssr [168]4 years ago
6 0

skin i think? Hope this helps!

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A person who is heterozygous for the x and y chromosomes is male female gendered there is not enough information to say. anth
Yanka [14]

The person should be a male.


Only male carries XY chromosomes, meanwhile female carries XX chromosomes. "Heterozygous for the X and Y chromosomes" means that the person have both X and Y chromosomes in their cells, therefore only males fits the description.


This is also why the birth rate of girl or a boy is always 50%, it is because the sex of a person is only determined by the sperm from a male. Each sperm either carries a X or a Y chromosome, never the both. Therefore, the chances of a X or a Y sperm fertilising an X egg is always 50%, also explains why both female or male must have at least one X chromosome because an egg always carry an X.

6 0
4 years ago
Cancer cells are different because they don't enter the G - 0 phase and they are likely to do which of the following Your answer
Allisa [31]

Answer:

c) repeat the cell cycle continuously

Explanation:

Cell division is a normal phenomenon for all cells as this is the way the cell reproduces and gets repaired in living organisms. However, some cells, due to mutation, keeps dividing and proliferating to form tumours. These cells are called CANCER cells. A normal cell undergoes cellular repair at certain checkpoints of the cell cycle. The checkpoints are necessary to determine a faulty cell and stop its division.

However, cancerous cells do not undergo any repair, which is why they do not enter the G0 phase as mentioned in the question. They keep on dividing out of control without death by repeating the cell cycle continuously.

6 0
3 years ago
Which of the following would best characterize an ecosystem? *
enot [183]

Answer:

It would be the last one: All organisms as well as the climate, soil. water, rocks, and other nonliving things

Explanation:

The first one is an organism

The second one is a population

And the last statement is a ecosystem

Hope this helped

7 0
4 years ago
Given an individual who is heterozygous for a recessive disease (i.e., the wildtype allele is dominant), explain how a deletion
omeli [17]

Answer:

Let us consider that A signifies the dominant allele and letter a signifies the recessive allele. The dominant allele, A would demonstrate normal phenotype, on the other hand, the recessive allele, a would be accountable for the disease. The possibilities of genotypes and phenotypes would be AA demonstrating normal homozygous individual, Aa demonstrating normal heterozygous individual, and aa demonstrating homozygous individual carrying the disease.  

Based on the given question, the genotype of the individual would be Aa, due to the existence of the dominant allele, normal phenotype would be demonstrated by the individual. In case if the deletion of A allele takes place from the genotype, the left a allele would possess the tendency to show its effect and the expression of the recessive phenotype will take place.  

Hemizygous refers to the condition in which only one allele is found in a diploid organism, and the organism within which it takes place is known as hemizygote.  

8 0
4 years ago
What kind of tissue is the forerunner of long bones in the embryo
MAVERICK [17]

Answer:

Hyaline cartilage.

Explanation:

Tissue are ensemble of specialised cells that perform functions.

Cartilage is a smooth and translucent tissue.

Hyaline cartilage is a glass like, transluscent cartilage found in the surfaces of joints. It is pearl grey like in color. It is normally found at the end of long bones of ribs, larynx and trachea. It has a lot of collagen

7 0
4 years ago
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