Acids: hydrogen ions; bases: hydroxide ions
Answer:
here v
Explanation:
you study things over a period of time, use quizlet for biology, use flashcards, have family or friends quiz you, and study notes
Answer:
0.25%
Explanation:
20 people start the new population. So there are 20 genes or 40 alleles for the recessive disorder phenylketonuria. 2 out of 40 alleles are recessive for the condition hence frequency of the allele = 2/40 = 0.05
Frequency of the allele does not change when the population increases so it is in Hardy-Weinberg equilibrium. According to it, if q is the frequency of recessive allele, q² = frequency of the recessive condition
Here, q = 0.05 So,
q² = (0.05)² = 0.0025
In percentage, it is 100 * 0.0025 = 0.25%
Hence, incidence of phenylketonuria in the new population is 0.25%
Answer:
Option B, Birth rates are high
Explanation:
A population pyramid with wide base and tapered at top shows that the number of young people in a given population are higher than people of other age group. This usually happens when the birth rate is high. This kind of population pyramid can be seen for countries with lower rate of development or are under developed. For example – Nigeria, Mexico, Bangladesh have such population pyramids
