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2021-05-14

What determines how often a phenotype occurs in a population?

What determines how often a phenotype occurs in a population?

An allele being dominant will determine frequency of occurrence of any specific phenotype. Explanation: The occurrence of any phenotype is dependent on the allele. If the allele is dominant, there are high chances of occurrence of a particular phenotype again and again.

How many phenotypes are there for a single gene trait?

four phenotypes

What determines the frequency of a particular and genetically determined phenotype in a given population?

Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene. The gene pool of a population consists of all the copies of all the genes in that population.

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What are the two main factors responsible for phenotypic variation?

An organism’s phenotype results from two basic factors: the expression of an organism’s genetic code, or its genotype, and the influence of environmental factors. Both factors may interact, further affecting phenotype.

How do phenotypes change over time?

The phenotype may change constantly throughout the life of an individual because of environmental changes and the physiological and morphological changes associated with aging. Three types of natural selection, showing the effects of each on the distribution of phenotypes within a population.

Can a person’s 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.

Can genotype as change to AA?

So, if you have a patient, whose genotype is SS, we will transplant cells that are AA from a normal person; the cells in the person will start producing AA. In this unit, you can change the genotype of a child or an individual from sickle cell to AA.

What is genotype AA mean?

homozygous dominant

What is the blood group of AA genotype?

Blood Type Look-Up Tables

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Mother’s Blood Type Possible Mother’s Genotype Father’s Blood Type
A AA, AO A
A AA, AO AB
A AA, AO B
A AA, AO O

What is the healthiest blood type to have?

According to Northwestern Medicine, studies show that: People with type O blood have the lowest risk of heart disease while people with B and AB have the highest.

Is it good to have O+ blood?

As an O Positive donor you are important to maintaining the blood supply in our community. Annually more than 120,000 units of blood, platelets, and plasma are required to meet the needs of the hospitals we serve, and your blood type is critical in saving the lives of patients in your community.

What foods should O+ blood type avoid?

Those with type O blood should choose high-protein foods and eat lots of meat, vegetables, fish, and fruit but limit grains, beans, and legumes. To lose weight, seafood, kelp, red meat, broccoli, spinach, and olive oil are best; wheat, corn, and dairy are to be avoided.

Why is O+ blood type rare?

Type O positive blood is given to patients more than any other blood type, which is why it’s considered the most needed blood type. 38% of the population has O positive blood, making it the most common blood type. Those with O positive blood can only receive transfusions from O positive or O negative blood types.