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Breast Cancer is carried through the genes, if your mother, grandmother, or sister has it, then your chances double. It is a DOMINANT gene and is often passed on through every generation, though it does not always appear. Chances are that it will occur more often after the age of 50, or if the woman has not had a child or birthed her firstborn after the age of 30.
In contrast to these seemingly high chances, only 5-10% of all Breast cancer reported is caused by heredity, most others are from environmental or personal factors.
Great Link is: www.netwellness.org/healthtopics/breastcancer/qa1.cfm
While dominant, having the mutation BRCA1 or BRCA2 does not mean you will get breast cancer. and not having it doesn't guarantee a person never will
Having it means that you are more likely to develop breast cancer sometime in your life
Not all genes guarantee that a trait will appear in a person's lifetime. Some just make conditions more likely because they change how cells work as a person ages
neither. breast cancer, like most cancers do not follow medelian ratios. the disease itself is very complex with multiple genes feeding into multiple possitions in multiple pathways. this is why, on the whole, it is poorly understood.
the traits do tend to be passed from one generation to the next however though, meaning if one of your family members have cancer, your risk of cancer is propbably higher than the general population, though not always by ever so much.
What else can I help you with?
When does a recessive trait dominant over a dominant trait?
A recessive trait cannot be dominant over a dominant trait. Dominant traits are always expressed over recessive traits in heterozygous individuals because they mask the expression of the recessive trait.
Which form of gene pair is expressed when both dominant and recessive are present?
In a situation where both a dominant and recessive allele are present in a gene pair, the dominant allele will be expressed phenotypically. The presence of a dominant allele overrides the expression of the recessive allele.
What is dominant recessive?
There is dominant and there is recessive. There is no dominant recessive. A dominant gene will always be expressed when present, such as in the homozygous dominant genotype (RR), or heterozygous genotype (Rr). A recessive allele is only expressed when the genotype is homozygous recessive (rr).
What is allele masked by the dominant allele?
An allele that is masked by the dominant allele is called a recessive allele. When an individual has one dominant allele and one recessive allele, only the trait determined by the dominant allele will be expressed. The recessive allele will only be expressed if an individual has two copies of it (homozygous recessive).
What is the different between dominant and recessive?
Dominant trait is the one which is expressed when the homologous pair of genes controlling it are either homozygous or Hetrozygous dominant; on the other hand recessive trait has both genes to be homozygous recessive. in fact trait is controlled by the form of genes. Dominant gene expresses even when it is in the company of recessive gene. However recessive gene expresses only when in company of recessive gene
Is lung cancer recessive or dominant?
probably dominant
Is the breast and ovarain cancer mutation dominant or recessive?
dominant
Is prostate cancer dominant or recessive?
prostate cancer is dominant, so there is a 50:50 chance you will get it
Is ovarian cancer dominant or recessive?
Ovarian cancer and Breast cancer are held in the gene mutations BRCA1 and BRCA2, which only one parents needs in their genes to pass on to their children. So it is dominant.
What can be dominant or recessive?
Alleles can be dominant or recessive
Is pancreatic cancer recessive or dominant?
Pancreatic cancer is not caused by a single gene mutation that follows typical dominant or recessive inheritance patterns. Instead, it is usually the result of multiple genetic and environmental factors interacting over time. Some inherited genetic mutations, such as those in the BRCA1 and BRCA2 genes, can increase the risk of pancreatic cancer, but they do not follow a simple dominant or recessive pattern.
Is melanoma dominant or recessive?
is malignant melanoma dominant or recessive
What is the difference dominant and recessive trait?
Dominant traits are the traits that mask the recessive traits. The dominant traits are stronger than recessive!
Is a situation in which a dominant allele completely masks a recessive allele for a gene.?
If you have 2 dominant alleles, the gene will be dominant, if you have 2 recessive alleles, the gene will be recessive. But if you have 1 recessive and 1 dominant, the Dominant allele will mask the recessive one.
How do you xxplain dominant and recessive?
Recessive
Is AAA recessive or dominant?
recessive
When does a recessive trait dominant over a dominant trait?
A recessive trait cannot be dominant over a dominant trait. Dominant traits are always expressed over recessive traits in heterozygous individuals because they mask the expression of the recessive trait.
