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evablogger [386]
3 years ago
6

What is heart and how many champers​

Biology
2 answers:
Tamiku [17]3 years ago
5 0

Answer:

The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.

S_A_V [24]3 years ago
5 0

Answer:

The heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.

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Genetics is defined as: Group of answer choices The scientific study of cells The study of cloning The scientific study of hered
krek1111 [17]

Answer:

The correct answer is ''The scientific study of heredity''

Explanation:

Genetics is a branch of biology that studies how hereditary characters are transmitted from generation to generation and the diversity that exists among living beings. Inheritance is the physical and biological characteristics that we share with our family and that can determine our appearance and our biological characteristics, that is, our phenotype (eye color, skin type, etc.) as well as our internal characteristics. All of this is largely derived from our genetic components, that is, our genotype.

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3 years ago
Eric has blood type O. What could be the genotype of his grandmother Tricia? Select all that apply.
sleet_krkn [62]

Answer:

C. IBIB

D. IBiO

Explanation:

The blood group system comprises of three different kind of alleles, iA, iB, IO. As we know that a person gets two alleles for both traits, one from father and one from mother, and based on that a person gets its blood group. IA and IB are dominant to IO.

So, if a person has genotype IAIO he will have blood group A and if he has genotype IOIB he will have blood group B because A or B are dominant to O.

However, if a person has blood group O it means that he has genotype IOIO.

So, in this diagram we see that Eric has blood type O, which means that his genotype will be IOIO.

The Eric's mother Melissa has blood group B, which means that she can either had genotype IOIB and IBIB respectively.

Similarly, Eric's grandmother Tricia has genotype  B which means that she can have genotype both  IOIB and IBIB respectively.

Therefore, both C and D are correct options.

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