What is a trait that hides another trait called?
recessive trait. trait of an organism that can be masked by the dominant form of a trait.
What makes one trait different from another trait?
Although an individual gene may code for a specific physical trait, that gene can exist in different forms, or alleles. One allele for every gene in an organism is inherited from each of that organism’s parents. Alleles produce phenotypes (or physical versions of a trait) that are either dominant or recessive.
What does it mean when a trait is independent from another trait?
Law of Independent Assortment
What are the three laws of inheritance?
Law of inheritance is made up of three laws: Law of segregation, law of independent assortment and law of dominance.
What is the genotype of an individual?
A genotype is an individual’s collection of genes. The term also can refer to the two alleles inherited for a particular gene. The expression of the genotype contributes to the individual’s observable traits, called the phenotype.
Can ones genotype change?
Genotype generally remains constant from one environment to another, although occasional spontaneous mutations may occur which cause it to change. However, when the same genotype is subjected to different environments, it can produce a wide range of phenotypes.
Is it possible for AA and as to give birth to SS?
No. An AA carrier will give the A allele to each gamete. As AS carrier will give the A allele to half its gametes and S to the other half. Therefore, statistically, half of the offspring will be normal (AA) and half will be unaffected carriers for the sickle disease (AS or sickle trait).
What does AA genotype mean?
homozygous dominant
What are the signs of AS genotype?
What are the symptoms of sickle cell anemia?
- excessive fatigue or irritability, from anemia.
- fussiness, in babies.
- bedwetting, from associated kidney problems.
- jaundice, which is yellowing of the eyes and skin.
- swelling and pain in hands and feet.
- frequent infections.
- pain in the chest, back, arms, or legs.
What blood type carries sickle cell trait?
It is an inherited condition in which both hemoglobin A and S are produced in the red blood cells, always more A than S. Individuals with sickle cell trait are generally healthy.
Who carries the sickle cell trait?
Sickle cell trait (also known as being a carrier) occurs when a person has one gene for sickle hemoglobin and one gene for normal hemoglobin. Approximately one in ten African-Americans carries sickle cell trait. People who are carriers generally do not have any medical problems and lead normal lives.
Can I give blood if I have sickle cell trait?
Is it safe for people with sickle cell trait to donate blood? Yes. If you have sickle cell trait, you are still are able to donate blood. There is no evidence to suggest that donating blood causes any additional risk of harm or injury to people with sickle cell trait.
Is it bad to have the sickle cell trait?
Sickle cell trait is NOT a disease and will never turn into a disease. People with sickle cell trait usually do not have any health problems. However, under extreme conditions a person with sickle cell trait can experience some of the same problems as a person who has sickle cell disease.
What happens if only one parent has sickle cell trait?
If one parent has sickle cell trait (HbAS) and the other does not carry the sickle haemoglobin at all (HbAA) then none of the children will have sickle cell anaemia. There is a one in two (50%) chance that any given child will get one copy of the HbS gene and therefore have the sickle cell trait.