Answer:
If one parent has blood type B and the other parent has blood type O, the percentage of the blood type of the offspring will depend on the genotype of the parent with blood type B.
Explanation:
Knowing the blood type of the offspring of the cross between parents with blood type B and O raises two possible scenarios, depending on whether the genotype of the parent (type B) is B|B or B|O.
Blood type is an inherited trait and is characterized by the presence or absence of surface antigens A and B in the red blood cells, which genetically behave as co-dominant traits.
- <em>Blood type A</em><em> contains antigen A and its genotype can be A|A or A|O.
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- <em>Blood type B </em><em>contains the B antigen, whose genotype can be B|B or B|O.
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- <em>Blood type AB </em><em>contains both antigens and a single A|B genotypic expression.
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- <em>Type O blood lacks surface antigens, and is the recessive trait so its genotype is O|O.</em>
<u>Scenario 1: Parent with genotype B|B.</u>
In this case, knowing that the genotype for type O is always O|O, all offspring would be of blood type B, genotype B|O.
B|B X O|O
Alleles B B
O B|O B|O
O B|O B|O
100% of the offspring would be of blood type B.
<u>Scenario 2: Parent with genotype B|O.</u>
In this case, 50% of the offspring will have blood type O and 50% B.
B|O X O|O
Alleles B O
O B|O O|O
O B|O O|O
In no scenario would offspring of blood type A be possible.
C. Radiation and chemotherapy can kill healthy cells
Explanation: radiation causes every cell around where it is put, to die, including healthy. Chemo and radiation don’t know the difference between healthy and unhealthy
Answer:
Nerve impulse
Explanation:
A nerve impulse is transmitted through the synaptic cleft by acetylcholine. When an impulse reaches the synaptic knob, it stimulates the vesicles to move towards the presynaptic membrane releasing the acetylcholine. The transmitter substance makes the membrane permeable. An action potential is then formed along the neuron.
Answer:
I just learned this in class lol
Explanation:
if the galaxies are going way from us, it's redshirt
if the galaxies are coming toward us, it's bkieshift but it's always galaxies redshifting from us due to galaxies moving away from us
Answer:
Lysosomes are membrane-bound vesicles produced by the Golgi apparatus that contain DIGESTIVE enzymes.
Explanation:
Such as glycosidases, proteases and sulfatases.
