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fredd [130]
3 years ago
10

A different flask of cultured cells contains 7 x 105 cells in 50 ml of medium. What is the concentration of cells (per ml) (0.5p

ts)
Biology
2 answers:
Nadusha1986 [10]3 years ago
7 0

To find the average number of cell cultured per area, you have to divide the total cell count with the total area. The cultured cells contains 7 x 10^5 cells count in 50 ml of medium area. The number would be: 7 x 10^5 cells / 50ml= 0.14x 10^5 cells /ml= 1.4 x 10^4 cells/ml

Alexeev081 [22]3 years ago
6 0

Answer:

1.4 x 10^{4} cells per ml

Explanation:

If there are 7 x 10^{5} cells in 50 ml of medium, the concentration of cells in 1 ml of medium can be calculated such that;

7 x 10^{5} cells is present in 50 ml

x cells is present in 1 ml

Cross multiply, we have

50x = 7 x 10^{5} x 1

x = 7 x 10^{5}/50

x = 1.4 x 10^{4}.

The concentration of cells per ml is 1.4 x 10^{4}.

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ii) Interference; the observed double crossover frequency differs from the expected double crossover frequency. Cross over interference is used to refer to the non-random placement of crossovers with respect to each other during meiosis. It results in widely spaced crossovers along chromosomes. Interference may exert its effect across whole chromosomes. As chromosomes in many eukaryotes are large, interference must be able to act over megabase lengths of DNA. 

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A man with type AB blood is married to a woman with type O blood. They have two biological children, and one adopted child. The
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Answer:

The adopted child is the one with type O blood.  

Explanation:

<u>Available data:</u>

  • A man with type AB blood is married to a woman with type O blood.
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The man´s genotype for blood type is AB (Codominant type of blood) and the woman´s genotype for blood type is OO, as this type of blood is expressed by two recessive alleles.

Cross:

Parental)  AB   x   OO

Gametes) A   B   O   O

Punnet square)      A      B

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