(1) What will be the frequency of the recessive allele in a population of 100 kangaroos if there are 50 dominant alleles? a.150

b.0.75

c.0.50

d.0.25

(2) If the frequency of the recessive allele for a gene is 0.3, calculate the expected frequency of heterozygotes in the next generation if the population is in Hardy-Weinberg equilibrium.

a.0.42

b.0.21

c.0.70

d.0.30

1. Option c

2. Option a

Explanation:

1. If there are 50 dominant alleles, this represent the frequency of dominant alleles p = 50/100 = 0.5

Using the formula p+q = 1 we can solve for the frequency of the recessive alleles q = 1 -0.5 = 0.5 = 50%.

2. the frequency of the recessive allele for a gene is 0.3 which is q = 0.3

From the Formula p + q = 1 we can solve for p the frequency of the dominant alleles = 1 - 0.3 = 0.7

To calculate for the number of heterozygotes, we use 2pq = 2 x 0.7 x 0.3 = 0.42

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

d. groundwater flows through the subsoil and deposits minerals.