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Because if they are dominant, then even one copy present in the organism would mean that the organism will be killed by the generic error (because they are fatal).
Thus to be passed on they have to be recessive - in other words if an individual has a good copy and a bad copy (genes are paired - one from the mother and one from the father) the good copy must be dominant for the individual to survive.
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How do dominant and recessive genes work?
explain how dominant genes work
What are dominant and recessive genes?
A dominant gene- A gene That is "stronger" than a recessive geneA recessive gene- A gene that must have 2 of the same to have that look.ex: A gene for being tall=T (CAPITAL T)A gene for being short=t(lowercase t)TT=TallTt=talltt=shortThe GENES WHICH ARE EXPRESSED IN THE PROGENY ARE CALLED DOMINANT AND WHICH DO NOT EXPRESS ARE CALLED RECESSIVE
What are 3 principals of gentics?
six basic principles of genetics are....Traits, or characteristics, are passed on from one generation of organisms to the next generationThe traits of an organism are controlled by genesOrganisms inherit genes in pairs, one gene from each parentSome genes are dominant, whereas other genes are recessiveDominant genes hide recessive genes when both are inherited by an organismSome genes are neither dominant nor recessive. These genes show incomplete dominancesource: i got this from my textbook.....and im in 7th grade. the txtbook is called Prentice Hall Exploring Life Science
Difference between dominant and recessive genes?
dominant genes are more likely to be passed down to a child than recessive genes. Here's an example: A woman has black hair and blue eyes. Her husband has blonde hair and brown eyes. Their child will most likely have brown eyes and black hair, because black hair and brown eyes are dominant genes, while blonde hair and blue eyes are recessive. It is, of course, still possible for the child to be blonde and blue-eyed, only less likely. However, if the father had blue eyes too, it would be most likely that the child would have blue eyes. Grandparents are also a factor: say that both parents have blue eyes, but one or more of the child's grandparents (or anyone down the genetic line, actually) has brown eyes. It is therefore also possible for the child to have brown eyes. hope it helped
If two genes in a gene pair are for the same trait what will that trait be?
The question should be "If two alleles for a gene are the same, what phenotype will the organism have?" Answer: If the two alleles are for the dominant phenotype, the organism will exhibit the dominant phenotype. If the two alleles are for the recessive phenotype, the organism will have the recessive phenotype.
Do dominant genes affect recessive genes?
The dominant genes take over, and then the recessive genes hide away
Which genes are dominant and which are recessive?
Dominant genes are always expressed in preference to recessive genes in cased where both genes are present.
What genes does a homozygous short pea plant always have?
Recessive genes
Do autosomes have lethal recessive genes?
Yes. Autosomes CAN have lethal recessive genes, but that does not mean they always contain recessive mutations.
If an animal with 2 dominant genes for a trait has offspring with an animal with 2 recessive genes for same trait their offspring can only have what?
Their offspring will have dominant genes. However, if these offspring have offspring with an amimal with recessive genes, the recessive genes will show up.
Traits determined by recessive genes located on the x chromosomes are said to be?
Some traits are determined by recessive genes on the X chromosomes. Many times these are genetic disorders and are called recessive genes.
The weaker of two genes is called what?
dominant
How do combinations of genes occur?
through dominate and recessive genes
Why aren't somatic mutations passed on to the next generation?
most genes mutations are recessive, and since most organisms have two of every genes, the normal genes will dominate the recessive genes.
Are freckles recessive genes?
Freckles are not determined by a single recessive gene. They are the result of a combination of genetics, particularly the presence of certain variations in the MC1R gene, and exposure to sunlight. The inheritance of freckles can vary depending on the specific genetic traits passed down from parents.
Why do the recessive genes do not disappear from the population?
The reason for recessive genes not disappearing is because there is always a different gene that you can pass on through your offspring
How do dominant and recessive genes work?
explain how dominant genes work
