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ohaa [14]
3 years ago
10

Explain how DNA is involved in creating genetic variation within a species. Is this considered a mutation, if so why?

Biology
1 answer:
den301095 [7]3 years ago
3 0

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

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An electrocardiogram (ECG) provides information about: Group of answer choices the pressure of blood in the heart chambers the r
MariettaO [177]

Answer:

the rhythm of heart contractions.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

1. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

2. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

An electrocardiogram (ECG) provides information about the rhythm of heart contractions.

Additionally, the right atrioventricular valve (AV) also referred to as the tricuspid valve is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

4 0
3 years ago
I am a real "powerhouse" 
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Mitochondria is the powerhouse of the cell. Only thing I remember from middle school science
6 0
3 years ago
Sickle cell anemia is produced by a genetic defect in the amino acid sequence of hemoglobin. Persons who are homozygous for this
JulijaS [17]

Answer:

The probability is 1/2

Explanation:

Heterozygous for sickle cell allele is AS

Homozygous allele is SS

AS SS

The offspring formed include

AS, AS, SS, SS

The probability of their children being carriers include

Number of AS/ Total number of offspring

= 2/4 =1/2 or 0.5

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While sitting on the couch reading your anatomy book, you realize that you left a window open because you feel a light breeze fl
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olfactory receptors

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In the Central Dogma of DNA, which process leads to the creating of RNA from
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b

Explanation:

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