Tobacco smoke is an example of a?
A. Natural indoor air pollutant
B. Combustion air pollutan...
Biology, 15.12.2020 18:30 caitlinwillie3223
Tobacco smoke is an example of a?
A. Natural indoor air pollutant
B. Combustion air pollutant
C. Human-made indoor air pollutant
Answers: 1
Biology, 22.06.2019 10:30
All ova contain sex chromosomes corresponding to: x y xx xy
Answers: 2
Biology, 22.06.2019 15:30
Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz
Answers: 1
Biology, 22.06.2019 16:30
You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation
Answers: 2
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