Are more dominante alleles more beneficial to the organism than the recessive version for a gene?
370115
1st part.... usually dominants are beneficial and more common in the population, but not always.  Huntington's disease which is fatal is dominant.  This has stayed in the population because it usually doesn't make the person sick until they are past child-bearing years.  Polydactyly (6 or more digits) is dominant as is syndactyly (fused digits).  Dwarfism is also dominant.\n2nd part...I don't see why not although I don't know of an example.
415046
According to Darwin, it's due to the accumulation of random point mutations in the genetic code of a primitive ancestor, one that's related to all the great apes. As these mutations accumulated, some individuals were removed from the gene pool (by the death or non-reproductive status of the mutant organism), others showed no change and therefore didn't compete for resources in any improved manner, and lastly, some showed mutations that were beneficial and allowed that individual to reproduce more efficiently (either by more efficient energy usage or mating habits, etc., whatever would give that individual and advantage over it's peers).\n\nThere are other more esoteric theories on evolution/development that may or may not contribute to this process, but Darwin's Theory is the universally accepted one.
477782
Genetics and evolution.
100049
Okay i never heard of the law of DNA but to answer the question.  If the condition of hair, straght or curly, is defined by a single gene, than there are two types.  The is a straight gene and a curly gene.  So everyone has two copies of the gene.  One from mom and one from dad.  So if mom gives a curly gene, and dad gives straight, which one will it be?  Well that is described by the law of domninance.  One gene will be stronger than the other.  One allele will out shine the other.  So you need to find out, which gene is dominant and which is recessive.  thats your answer
877953
If an entire species has the same gene, they would all be the same. So if the species was hit with a disease they are vulnerable to, all of them would die because none of them could develop an immunity against it. Gene difference also allows more changes for mutation which is important for long term survival.
266130
The advantage is seen in the fishes who could slightly breathe through their skin.  When the pond dries up millions of times over hundreds of millions of years the descendants with better breathing could eventually stay ashore and ponder these questions.  The advantage of asexual reproduction is that you don't have to be cute.
222852
a dominant genetic disorder only requires one copy of the causitive gene, so if one of your parents had one copy of the gene and the other none, you would have a 50% chance of getting it. if its recessive, it takes two copies of the gene to actually have the disease, so both parents would both have to have a causitive gene. so dominant usually affects every generation, while recessives usually skip and are less frequently manifested. thats if its autosomal (meaning not on a sex chromosome). if its X-linked, then it gets more complicated. see the link below (pages 4-9) for more help and examples of diseases.
264382
Organisms that are the best fit tend to survive longer and reproduce more, having more offspring and passing on their DNA to future generations.  If mutations occur in the DNA that makes the organism better able to survive, it's likely that it will be passed on.  If you look at organisms' DNA over time, you'd find the changes/mutations that have occured.\n\nThe above responder is absolutely incorrect about mutations: they CAN add nucleotides to the sequence of DNA. In fact, they can make 3 small-scale changes: point mutations (changing from one nucleotide into another), insertions (adding nucleotides), as well as deletions (removing nucleotides). I know this for a fact because we have just recently finished studying this exact subject matter in my biology class.  Also check out my source link and you'll find that out.
293753
Your friend is correct. I just studied this in school. Dark hair always dominates light hair. And the allele for green eyes overpowers the allele for blue eyes.
577355
Many genes that cause problems are recessive meaning it takes the same gene fron each parent to produce the problem.  If 1 parent provides a dominant gene and the other has a recessive,  then the problem won't manifest itself. With inbreeding, you have the gene present in a greater percentage of potential parents   so the likelihood is greater that both parents will have a recessive gene than in a "normal" population pool.Thus the likelihood of producing offspring with the problem
560142
One of each pair is derived from either parents. Also due to the diploid nature of chromosomes genotypes as homozygous dominant, homozygous recessive and heterozygous can be found. Thus a recessive character can be avoided to the maximum.
976258
Natural Selection.  Best bodies generally mean the best genes and increased chances at a healthy reproduction.
835767
The word dominant should give you a clue ;)\n\nNote for the first person who answered this question- if the plant has 2 recessive alleles, then it won't have the dominant allele. Haha :p\n\nIn any case, the plant will be tall. :)
386933
With a transposable element, i believe it is easier to control where the genes get spliced in.  using a plasmid to infect the gene would likely be random
490930
black or white or any other color in dominate/recesive genes. Its a gamble really.
389612
Everything about a life form is decided by DNA from the colour of it's fur or skin to it's size. This is what our parents pass on to us. However, if this is not copied properly when it is passed on to an egg or sperm cell, which becomes a baby, then the baby may have a different characteristic from the rest of its species. This is called a mutation. If this mutation gives the animal an advantage over other animals in it's species- for example if it makes a moth brown instead of white so it can blend in on trees more, and is less likely to be eaten by predators, then that animal is more likely to survive. If it then mates and passes on it's mutated DNA to more offspring then they are more likely to survive so slowly the white moths would be eaten where the brown would not, and the species has 'evolved' to be brown. Every animal you can think of has been formed by tiny mutations over millions of years. We owe evolution quite a lot!
227943
just as many genetic traits have are a result of recessive genes with a dominate trait. Genes are not wholly responsible for homosexuality. However the combination of the genes and enviroment brings the homosexual trait to the fore. Evolution has probably placed many such time bombs in our genes, Generally they are so that our population as a whole can survive drastic changes in our environment. The biggest change in our environment in the last 200 yrs has been population growth. Just a minute and I will post a link.