Hardy Weinberg Equilibrium

Which Hardy-Weinberg equation represents the genotype frequencies in a population?

• p + q = 1
• p2 + 2pq + q2 = 1
• p2 + pq2 + q2 = 1
• p + 2pq + q3 = 1

Tags

NGSS.HS-LS2-2

NGSS.HS-LS4-3

A population of 150 individuals has an allele frequency of 0.3 for the dominant allele (B) and a frequency of 0.7 for the recessive allele (b). Use the Hardy-Weinberg equation to determine the frequency of the genotype (bb).

• 0.09
• 0.42
• 0.49
• 0.21

Tags

NGSS.HS-LS2-2

NGSS.HS-LS4-3

Determine the expected numbers of organisms with genotype BB if the frequencies are as follows in a population with a total size of 150: f(BB)=0.16, f(Bb)=0.48, and f(bb)=0.36. 

• 24
• 72
• 54
• 150

Tags

NGSS.HS-LS2-2

NGSS.HS-LS3-3

If 98 out of 200 individuals in a population express the recessive phenotype, what percent of the population would you predict to be heterozygous?

• 70%

• 30%

• 42%

• 49%

Tags

NGSS.HS-LS3-3

In a population of humans, the frequency of no dimples is 0.36. If having no dimples is the recessive phenotype, what is the frequency of the recessive allele?

• 0.6

• 0.36

• 0.64

• 0.18

Tags

NGSS.HS-LS3-3

What is genetic drift?

• the changes in allele frequencies (genes) ,in a population, happening due to random events/circumstances.

• It is an example of primary succession

• Genetic drift are different organisms in a population due to inherited traits from their parents

• It is part of symbiotic relationships such as mutualism, commensalism, parasitism

Tags

NGSS.HS-LS4-2

 Genetic Drift is more likely to happen in... 

• aquatic populations
• small populations
• terrestrial populations
• older populations

Tags

NGSS.HS-LS4-2

A mutation is defined as:

• A change in the cell's structure

• Anything that changes in an embryo

• Any change in the physical features of a human

• A change in the DNA sequence

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Situation in which allele frequencies change as aresult of the migration of small subgroup of a population is known as:

• founder effect

• genetic bottleneck

• random mating

• natural selection

Which of the following is an example of the bottle neck effect?

• Bald Eagles are hunted until near extinction, population recovers.
• Small group of iguanas floats to an island, starts a new population.
• Red fox pups are more likely to survive in a snowy environment if they are born white.
• Farmer chooses seeds from largest apples to plant next year.  This results in larger apples from year to year.

Tags

NGSS.HS-LS4-5