subject
Biology, 24.07.2019 01:20 miyapooh3472

Examine the following scenario: a population of small fish lives in a lake (lake a).the dark-colored fish are the ancestral phenotype and represent the usual coloration of the species. the bright-colored fish, however, arose over time. there is a steady rise in the population of bright-colored fish. both populations thrive. suppose that a short land barrier separates lake a from another small lake with a population of only the normal dark-colored fish (lake b). after torrential rains lasting for days, the lakes overflow and a few of the bright-colored fish from lake a are washed into lake b. list the sequence of evolutionary mechanisms which have come into effect in each event.

ansver
Answers: 2

Another question on Biology

question
Biology, 22.06.2019 02:50
Cells destroy body cells infected by a virus or bacteria.
Answers: 1
question
Biology, 22.06.2019 10:00
An animal cell (left) and a plant cell (right) are shown.which organelle, labeled x in the diagram, is found in both plant and animal cells?
Answers: 1
question
Biology, 22.06.2019 10:40
Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.
Answers: 2
question
Biology, 22.06.2019 11:00
Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit
Answers: 3
You know the right answer?
Examine the following scenario: a population of small fish lives in a lake (lake a).the dark-colore...
Questions
question
English, 28.01.2020 00:31
question
Mathematics, 28.01.2020 00:31
question
Mathematics, 28.01.2020 00:31