What substance do you think reacts with a cut apple to turn it brown?

(f) contact a local hospital and ask them the percentage of the population that is blood type o. why might the results differ?

Fudgin [204]

Contacting a local hospital and asking them the percentage of the population that has blood type O will generate different results.

The factors that we have to consider why there is differing results are:
1) location of the hospital
2) nationality of their patients
3) number of their patients

I am assuming that the population that question is referring to is the number of patients in the local hospital. The bigger the population, the smaller the effect a unit has on the whole and vice versa.

I read an article that states that 37% of the U.S. population has O+ blood type. These people are usually of Hispanic descent or some Asian descent. So, if a hospital is in a locality that has a majority of Hispanic or Asian patients, its percentage will be higher than a hospital that is located in a Caucasian-populated area.

Aside from Type O+ (most common), blood types also include: O-, A+, A-, B+, B-, AB+, and AB- (rarest blood type)

7 0

3 years ago

Due to entry of K+, voltage-gated Ca2+ channels lead to the release of glutamate onto spiral ganglion fibers.

Sedbober [7]

I believe it’s false not sure though

5 0

3 years ago

Down syndrome is the result of an extra chromosome 21 in a gamete. What caused this to happen?

Natasha2012 [34]

No disjunction is the answer

8 0

2 years ago

In some breeds of mice, yellow coat color is

Elis [28]

In the exposed lethal genes cause the individual's death during embryionic development before being born. H0m0zyg0us dominant individuals do <u>not get born</u>. Yellow: 2/3. Grey: 1/3. Phenotypic ratio: 2:1

<h3>What is complete dominance?</h3>

When the dominant allele completely masks the expression recessive allele, we talk about complete dominance.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait.

The dominant allele is hiding the expression of the recessive allele.

<h3>What are the lethal genes?</h3>

Refer to genes that impede the normal development of the individual.

They can cause death during embryo development <u>before the individual gets born, </u>

They can cause the individual's death after being born and <u>before reaching </u><u>sèxual maturity</u><u>. </u>

Let us assume that mice color is coded by a single diallelic gene that expresses complete dominance.

<u>Available data</u>:

Yellow color is dominant over grey color.

Yellow is coded by the dominant allele Y
Grey is coded by the recessive allele y

Genotype YY → Yellow and lethal

Genotype Yy → Yellow

Genotype yy → Grey

The cross would be as follows,

Cross: Yy x Yy

Gametes) Y y Y y

Punnett square) Y y

Y YY Yy

y Yy yy

F1) Considering ONLY the successfully born individuals

<u></u>

<u>Genotype</u>

2/3 = 50% of the progeny is expected to be heter0zyg0us, Yy.

1/3 = 25% of the progeny is expected to be h0m0zyg0us recessive, yy.

<u></u>

<u>Phenotype </u>

2/3 = 50% of the progeny is expected to be yellow, Yy.

1/3 = 25% of the progeny is expected to be grey, yy.

The phenotypic ratio is 2:1

You will learn more about lethal genes at

brainly.com/question/13654244

brainly.com/question/14932405

5 0

1 year ago

Psl 250 when the ventricles are contracting, blood is flowing through which valves?

Likurg_2 [28]

Pulmonary valve and Aortic valve

During systole, the aortic and pulmonic valves open to permit ejection into the aorta and pulmonary artery.

<h3>What happen when ventricles contract ?</h3>

When the right ventricle contracts, blood is forced through the pulmonary semilunar valve into the pulmonary artery

Then it travels to the lungs. In the lungs, the blood receives oxygen then leaves through the pulmonary veins. It returns to the heart and enters the left atrium.

When the left ventricle contracts, it forces blood through the aortic semilunar valve and into the aorta. The aorta and its branches carries the blood to all the body's tissues.

Learn more about Ventricles here:

brainly.com/question/1569437

#SPJ4

8 0

2 years ago