How did insects become resistant to DDT
A. Some were already resistant and were the survivors that could reproduce.
B. All insects already had genetic resistance to DDT and it took effect once exposed.
C. The gametes of all insects exposed to DDT were mutated for the offspring to be resistant.
D. All surviving insects eventually developed resistance after multiple exposures to DDT.
Answers: 1
Biology, 21.06.2019 23:50
Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.
Answers: 1
Biology, 22.06.2019 03:30
Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above
Answers: 2
Biology, 22.06.2019 07:30
1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano
Answers: 3
Biology, 22.06.2019 08:40
Where does the information about where each transcription factor binds originate?
Answers: 1
How did insects become resistant to DDT
A. Some were already resistant and were the surv...
A. Some were already resistant and were the surv...
Mathematics, 14.09.2020 15:01
Chemistry, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Arts, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Health, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Biology, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01