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Home /Doubts and Solutions/CBSE

CBSE Free Doubts and Solutions

CBSE - VIII - Geography

if a thig is found on the earth, then it is called the resource? is it true or false ?

Asked by nirajm360 12th July 2020, 9:04 AM
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CBSE - X - Biology - Heredity and Evolution

My doubt: This is a basic question on checking whether the gene is dominant or recessive. There is no question of determining blood group dominance and it does not include any other blood group so why are there answers saying the information is insufficient. Can someone please explain?   A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not? The information on whether O is dominant or A is dominant is sufficient. Daughter has blood group O. It must mean that she must have received an O from the father and an O from the mother. For her to receive the O from the father then the father’s blood type must be AO and the mother’s must be OO. We know that for a trait to be dominant we only need one gene whereas recessive traits appear when both the parents contribute recessive genes. Therefore type O blood group is a recessive type. And type A blood group is dominant.

Asked by davidpriya 11th July 2020, 9:18 PM
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CBSE - VII - English

chpt 6 

Asked by mokshshah9 11th July 2020, 6:22 PM
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CBSE - X - Science - Acids, Bases and Salts

what are alkalis? explain in brief.

Asked by arindeep.singh 11th July 2020, 4:44 PM
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CBSE - X - Science - Acids, Bases and Salts

explain " Acids are electrolytes". what is the meaning?

Asked by arindeep.singh 11th July 2020, 4:38 PM
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CBSE - X - Science - Chemical Reactions and Equations

identify the type of chemical reaction.

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Asked by arindeep.singh 11th July 2020, 3:59 PM
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CBSE - X - Science - Chemical Reactions and Equations

identify the type of chemical reaction.

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Asked by arindeep.singh 11th July 2020, 3:58 PM
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CBSE - X - Science - Metals and Non-Metals

what is thermite reaction?

Asked by arindeep.singh 11th July 2020, 3:56 PM
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CBSE - IX - Geography

Write a short note on the indian desert

Asked by sargamjain024 11th July 2020, 3:50 PM
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CBSE - VIII - English

what is meaning of matter

Asked by parsadhoriyaparsadhoriya 11th July 2020, 12:00 PM
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