Biology, 21.02.2020 00:31 tonytashaqua
In this eight-year experiment, 12 populations of E. coli, each begun from a single cell, were grown in low-glucose conditions for 20,000 generations. Each culture was introduced to fresh growth medium every 24 hours. Occasionally, samples were removed from the populations, and their fitness in low-glucose conditions was tested against that of members sampled from the ancestral (common ancestor) E. coli population. The cells in the 12 cell lines grown in low-glucose conditions showed the effects of which of the following processes?
1.8 1.6 1.0 5,000 10,000 5,00 20,000 Generation
a. natural selection and mutation
b. conjugation and transformation
c. natural selection and gene flow
d. gene flow and genetic drift
Answers: 2
Biology, 21.06.2019 22:00
This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic
Answers: 2
Biology, 22.06.2019 00:00
Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy
Answers: 2
Biology, 22.06.2019 00:00
If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.
Answers: 3
Biology, 22.06.2019 09:00
Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm
Answers: 1
In this eight-year experiment, 12 populations of E. coli, each begun from a single cell, were grown...
History, 05.02.2021 23:40
English, 05.02.2021 23:40
Mathematics, 05.02.2021 23:40
English, 05.02.2021 23:40
History, 05.02.2021 23:40
Mathematics, 05.02.2021 23:40
Mathematics, 05.02.2021 23:40
Geography, 05.02.2021 23:40
Social Studies, 05.02.2021 23:40
Social Studies, 05.02.2021 23:40
Mathematics, 05.02.2021 23:40
Mathematics, 05.02.2021 23:40
Computers and Technology, 05.02.2021 23:40