Answer:
0.78
Explanation:
Fitness measures the probability of survival and reproduction of a particular phenotype or genotype in a population.
Relative fitness measures how fit one genotype or phenotype is with respect to the most fit genotype or phenotype in a popualtion. It is calculated as = survival rate of that group / maximum survival rate observed in that population
Here,
Total number of yellow birds = 263
Yellows birds that survived = 150
Survival rate of yellow birds = 150/263 = 0.57
Total number of grey birds = 413
Grey birds that survived = 303
Survival rate of grey birds = 303/413 = 0.73
Grey birds have more survival rate than yellow birds so their survival rate is maximum in the population.
Fitness of yellow phenotype relative to grey phenotype = survival rate of yellow birds / survival rate of grey birds
= 0.57 / 0.73
= 0.78
Hence, fitness of the yellow phenotype relative to the grey one is 0.78.
Explanation:
For people 7 years of age and older who have not been previously immunized against tetanus, WHO recommends a 3-dose primary vaccination series with tetanus-diphtheria containing vaccine followed by 3 booster doses, to be protected throughout life.
Answer:
The appropriate primary vaccination series is as follows:
- First dose - week one
- Second dose - 4 - 8 weeks after the first dose
- Third dose - 6 - 12 months after the second dose
The eggs are produced in the ovaries.
A solution is a homogenous
mixture of substances with very small particles. It means that it has same
properties throughout the mixture. Example of solution is a mixture of sugar
and water in a glass, where sugar is approximately 5% sugar in 95% water. This ratio
of mixing is carried out all over the glass. When light is passed through a
solution, it will not obstruct the light because they have small particles,
instead light will pass the container.
<span>On the other hand, a colloid is
a heterogeneous mixture that contain medium-sized particles. When colloid mixture is shined by light, the
light does not passed through a colloid and the light is scattered. A good
example is milk and Jell-O. </span>
Nevertheless, a suspension is
also a heterogeneous mixture that have large particles. When left standing,
particles settle into layers within the container. This is a result of having large
particles; the gravity pulls them out of the solution. A muddy water describes
the characteristic of suspension for the dirt would settle to the bottom of the
container.
Therefore, <span>colloids and suspensions are special types of heterogeneous
mixtures. In order to be a solution, a mixture must have very small particles
evenly distributed, so that the mixture has the same properties throughout. Meanwhile,
colloids and suspensions have particles that are too big to be considered a
solution.</span>