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Ostrovityanka [42]
3 years ago
10

What is the process by which two haploid cells (1n) combine to form a diploid cell (2n)?

Biology
1 answer:
Gnom [1K]3 years ago
8 0

1 diploid cell (2n) cell becomes 4 haploid (n) germ cells (eggs or sperm). During meiosis, chromosomes are replicated once in S phase (just like mitosis), but the cell divides twice. ... The result: chromosomes after meiosis are genetically unique and have combinations of DNA derived from both parents.

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A newly developed pesticide has been observed to bind to an intracellular hormone receptor. If ingested, residue from this pesti
Degger [83]

Answer:

Thyroid hormones      

Explanation:

Animals and people exposed to pesticides such as insecticides, fungicides, and herbicides, have shown to be affected by their effect on the thyroid. These chemicals can produce endocrine alterations acting as thyroid disrupters. They affect many mechanisms in the organisms such as inhibition of thyroid iodine uptake, <u><em>interference with the thyroid hormone receptor</em></u>, binding to transport proteins, among others. They cause toxicity in the functioning of the hypothalamic-pituitary-thyroid axis.

There are many studies that associate thyroid diseases with exposure to organochloride pesticides. Significant alteration in the TSH, T3, and T4 levels have been expressed by people directly or indirectly exposed to the chemicals.            

5 0
3 years ago
How is RNA and DNA different
Shkiper50 [21]

-DNA is double stranded,RNA is one stranded

-DNA contains the following nitrogenous bases:Adeninde Guanine Timine Citozine while RNA contains Adeninde Guanine Citozine and Uracil

-DNA function is to contain the information for manufacturing proteins while there are many types of RNA with whole different jobs for example:messanger RNA(mRNA) it coppies a sequence from the DNA strand and takes it to the ribosome in order to be translated as the order for placing aminoacids in the polypeptide strand;transport RNA(tRNA) it is a short RNA strand containing up to 100 nucleotides it takes aminoacids to the ribosome so the polypeptides strand can start to be manufatured from aminoacids in an order inscripted in the mRNA.

8 0
3 years ago
Read 2 more answers
How does nutrition affect the expression of phenotype
Rzqust [24]

Answer:

Genes are important for determining function, but nutrition modifies the extent to which different genes are expressed and thereby modulates whether individuals achieve the potential determined by their genetic background. Nutrition modifies both physical and cognitive aspects of performance.

Explanation:

which means it determines (firmly decide) on how much you exercise and what you eat, for an example if you eat unhealthy all the time like alot of dessert or sweets and ssalty foods then it gives you a unhealthy genetic backround(in which each gene functions).

3 0
3 years ago
Rank the following cellular features and/or activities in terms of their decreasing complexity compared to one another. The most
musickatia [10]

Answer:

Ecosystem, Metabolism, Cells, Elements and Functional groups, Macromolecules.

Explanation:

All living things are made up of cells which is the smallest unit of individual organisms. Ecosystem, Metabolism, Cells, Elements and Functional groups, Macromolecules. the foregoing distinguishes living things from non-living.

5 0
3 years ago
Are tyere any mammalian cells that would be a good source for dividing cells?
Artemon [7]

Answer:

Explanation:

This question appear wrong. Cells do not divide other cells as cells have the ability to undergo individual cell division as seen in cell cycle. However, there are some factors that could lead to increased cell division; factors such as cancer and viral infection can lead to increased division of certain cell types.

There is also a cell organelle present in mammalian cells that facilitates the division of a cell - this organelle is known as centriole. Centrioles do this by assisting in the separation of chromosomes during the mitotic phase of the cell cycle.

6 0
3 years ago
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