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Proporciones
Matemáticas
Middle School Math
Proporciones

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Name _____________________________
Date ___________________
Proporciones
Completa.

1.  If there is a one in five chance of getting a red flower when crossing a red flowered plant with a white flowered plant, how many white flowered plants would be expected in a population of763offspring from such a cross?

2.  In a certain desert environment there are a lot of small rodents. There also happen to be a lot of snakes that feed on the rodents. The ratio of rodents to rodent eating snakes is13to5. If there are3,600snakes in the area, how many rodents are there?

3.  If two out of every seven individuals in a population of armadillos carry a gene for a defective enzyme, how many individuals carry the normal gene in a population of828armadillos?

4.  In a population of769,002cells some are undergoing division and some are not. Assume that while some of the cells are dividing, no other cells will begin to divide to until the group that is dividing is finished. Let's say the ratio of dividing to not dividing cells is8to5. What will the cell population be after the cells that are dividing have completed the division process?

5.  There is always a 1 to 1 correspondence between the number guanines (G) and the number of cytosines (C) in a DNA molecule. The same is true of the relationship between adenine (A) and thymine (T). Of course professor Floop knows this. He analyzed a strand of DNA and determined the amounts of C and G it contained. If the molecule was24% G, what was the percentage of A?

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suscriptores de edHelper - Cree un imprimible nuevo
Clave también incluye las preguntas
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Proporciones
Matemáticas
Middle School Math
Proporciones

This worksheet still contains English.
edHelper is working on the translation