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There is no correlation between number of chromosomes and size, nor is there a correlation between number chromosomes or genes and complexity. More chromosomes or genes aren't needed to maintain a larger animal because there is a copy of the genome within each cell.

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12y ago
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14y ago

they don't ...cells have the same size ...what you're really asking for is ...what does a group of cells make up ...a tissue

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Q: Why do larger organisms not need more chromosomes?
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How do organisms add more cells to their bodies?

Adding more cells


What role did cyanbacteria play in the evolution of life on earth?

The role of raising atmospheric oxygen to so high a level that multicellular and complex organisms could evolve. Oxidative phosphorylation generates the energy through ATP that larger and more complex organisms need.


Explain why large active organisms need special surface for exchange?

large organisms need larger area to exchange more substances.but large organisms have small surface area to volume ratio.this means that the surface is not large enough to enable gases and nutrients at the fast rate needed to keep all the cells alive.thus large organisms need special exchange surfaces to provide the body with the nutrients and gaseous exchange they require.


Why do gametes have half the number of chromosomes as somatic cells?

Since you need 46 chromosomes total to function properly, and each of your parents have 46 chromosomes, you need to get 23 chromosomes from each of your parents in order to have the correct number of 46 chromosomes. You get 22 somatic chromosomes (autosomes) and 1 sex chromosome from each parent. Of course, during oogenesis or spermatogenesis, there could be nondisjunction, resulting in you receiving more or less chromosomes than you should. An example of this is Down Syndrome, where you receive an extra copy of Chromosome 21 from either parent. However, generally you will only receive 23 chromosomes from each parent (through their gametes) so that when they combine, you will have the correct 46 chromosomes. That is why gametes (haploid) have half the number of chromosomes as somatic cells (diploid).


How many cells do living things have?

The smallest living organisms are as small as a single cell. Organisms are of all sorts of sizes from one to billions of cells.

Related questions

Why do reproductive cells need to have half the normal number of chromosomes?

Humans and other organisms that reproduce sexually need to have half the normal number of chromosomes to make sure their offspring have the same number of chromosomes as they do - the father and mother each contribute half of their chromosomes (sperm and egg).


Will a population grow larger if it has a large supply of food?

no it will not because it depends on how many males and females there are in that group


How do organisms add more cells to their bodies?

Adding more cells


Do more complex organisms need more energy than simpler organisms?

yes they have more mass which needs more energy!


What role did cyanbacteria play in the evolution of life on earth?

The role of raising atmospheric oxygen to so high a level that multicellular and complex organisms could evolve. Oxidative phosphorylation generates the energy through ATP that larger and more complex organisms need.


Are all organs multicellular?

(; No, there's some things that are unicells. Humans, and larger types of organisms are multicellular. Small organisms are unicells because their body ain't large enough and they don't need alot of cells like us. ;)


Why do larger organisms need a circulatory system and amoeba do not?

We are eukaryote which means are cells are more advanced than there's. And since we have more cells than a amoeba. Our cells carry oxygen to the brain and other organs in the body. A amoeba dose not have a brain. So it doesn't need a circulatory system.


Do larger seeds need more room to grow?

usually


What might happen if you go on buying more and more cars?

You will need a larger garage.


Why do organisms need to be able to reproduce?

They don't HAVE to but if most don't, there will no more left.


How it effect the organisms if the pollution continues?

The organism will either have to adapt or die. For most larger, more complex life forms it is difficult to adapt. They are actually quite fragile and need a specific environment. It is usually the humbler forms that adapt.


Why has bacteria only one chromosome but amoeba has several?

Because amoebas are more advanced in their design then bacteria, therefore they need the chromosomes to encode that information. Examples are like how amoebas have membrane bound nucleus and many organelles, in contrast bacteria lack these things. Also amoebas are much larger in size. However amoebas have many very small chromosomes, while bacteria have one larger one. So the amount of information on each chromosome is also in large contast