Yes i think
The fungus Coccidioides immitis is found in the soil. Humans contract coccidioidomycosis by inhaling fungal spores. Which of these descriptions applies to the role of soil in transmission of coccidioidomycosis?
A team of scientists is studying a mitochondrial DNA sequence shared by two species, and they determine that the DNA has a constant mutation rate. The DNA sequences of the two species are shown below. Species A: GTAGGCATTCGAT
Species B: GCACGCATACGTT
The scientists use the idea of molecular clocks to determine that the two species diverged from a common ancestor 40 million years ago. Based on this information, how much more time would it take for the two species to differ by a total of 10 base pairs?
80 million years
200 million years
60 million years
40 million years
The correct answer would be 60 million years.
The molecular clock is a technique used to determine the time when the two species diverged from a common ancestor. It uses the mutation rate to determine the same.
Mutation rate is the rate at which a number of mutations take place in a given unit time.
If we compare the DNA sequence of the given two species, we would find that four mutations have taken place in forty million years.
Species A: GTAGGCATTCGAT
Species B: GCACGCATACGTT
Thus, the mutation rate of the species is one mutation per 10 million years.
The DNA sequences already have 4 mutations. Thus, for a total of 10 mutations, 6 mutations are required.
Thus, in 60 million years the two DNA sequences would differ by a total of 10 nucleotides.
The standard deviation of the tap water data is 1.086. The standard deviation of the salt water data is 1.107. Which explains why the standard deviation is the best measure of variability to use to compare the data?
A). Nearly Symmetrical
Don't ask i kno all answers!
I'm guessing the options are
A. The two distributions are nearly symmetric
B. The distributions do not overlap on the same range of temperatures.
C. The distribution of salt water boiling temperatures is left-skewed.
D. The distribution of tap water boiling temperatures is right-skewed.
The correct answer is A. The two distributions are nearly symmetric
This was the correct answer when I just took the test
What process accounts for species diversity? A) mitosis B) meiosis C) predation D) symbiosis
Answer: It’s B) meiosis.
Melting snow, rain, and storms can all lead to which event?
it could lead up to a warm event
HCG is secreted in the human female immediately after conception. How would a gynecologist use this information?to detect pregnancy to detect abnormalities in the embryo
to facilitate embryo implantation
Mountains are part of which earth sphere? A. Cryosphere
Explanation: Any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere.
Name three intermolecular forces that stabilize the structure of dna, and explain how they act.
What is the value of using both observations and inferences in scientific research?