In the formula for determining a population\'s genotype frequencies, the pq in the term 2pq is necessary because the population is diploid. heterozygotes can come about in two ways. the population is doubling in number. heterozygotes have two alleles. What is the founder effect? a selection of the best-suited traits for the environment a series of chance events that change allele frequency when a few individuals become isolated from a larger population, and their gene pool differs from that source population a sudden change in the environment that reduces the size of the population Which of the following activities occurs first in order to begin speciation? single gene change formation of mechanical barrier to reproduction postzygotic hybrid sterility in Drosophila interruption of gene flow between two populations A genetic change that caused a certain Hox gene to be expressed along the tip of a vertebrate limb bud instead of farther back helped make possible the evolution of the tetrapod limb. This type of change is illustrative of the influence of environment on development. paedomorphosis. A change in a developmental gene or in its regulation that altered the spatial organization of body parts. heterochrony. Which of the following statements about dinoflagellates is true? They possess two flagella. All known varieties are autotrophic. Their walls are usually composed of silica plates. Many types lack mitochondria. Their dead cells accumulate on the seafloor and are mined to serve as a filtering material. Solution Ans. 6: pq in the term 2pq is necessary because heterozygoted have two alleles, hence option D is correct. Ans. 7: Founder\'s effect is when few individuals separate from large population and their gene pool differs from source population. Hence option C is correct. Ans. 8: interruption of gene flow between two population is first step for speciation hence option D is correct. Ans. 9: the given process is best explained by option C. Ans. 10: option E is more correct amongst the given options..

1. In the formula for determining a population's genotype frequencies, the pq in the term 2pq is
necessary because the population is diploid. heterozygotes can come about in two ways. the
population is doubling in number. heterozygotes have two alleles. What is the founder effect? a
selection of the best-suited traits for the environment a series of chance events that change allele
frequency when a few individuals become isolated from a larger population, and their gene pool
differs from that source population a sudden change in the environment that reduces the size of
the population Which of the following activities occurs first in order to begin speciation? single
gene change formation of mechanical barrier to reproduction postzygotic hybrid sterility in
Drosophila interruption of gene flow between two populations A genetic change that caused a
certain Hox gene to be expressed along the tip of a vertebrate limb bud instead of farther back
helped make possible the evolution of the tetrapod limb. This type of change is illustrative of the
influence of environment on development. paedomorphosis. A change in a developmental gene
or in its regulation that altered the spatial organization of body parts. heterochrony. Which of
the following statements about dinoflagellates is true? They possess two flagella. All known
varieties are autotrophic. Their walls are usually composed of silica plates. Many types lack
mitochondria. Their dead cells accumulate on the seafloor and are mined to serve as a filtering
material.
Solution
Ans. 6: pq in the term 2pq is necessary because heterozygoted have two alleles, hence option D
is correct.
Ans. 7: Founder's effect is when few individuals separate from large population and their gene
pool differs from source population. Hence option C is correct.
Ans. 8: interruption of gene flow between two population is first step for speciation hence option
D is correct.
Ans. 9: the given process is best explained by option C.
Ans. 10: option E is more correct amongst the given options.