Biology, 08.07.2021 23:50 jovellabreu12

Try this for yourself. Suppose you want to estimate the number of field mice in a small field. One day you capture 500 mice, mark all of them and release them. The next week you capture 200 mice of which 40 were marked by you yesterday. What is your estimate of the population size?

Answers: 1

Show answers

Answers

Answer from: lrg34

The approximate size of the field mice population is 2500 individuals.

Explanation:

There are different methods to study population density. There are direct methods and indirect methods. Among these last ones, we might find the "Mark-Recapture technique".

The Mark-Recapture technique assumes that the population is closed, during the sampling season there is no mortality nor natality, marks in the individual last the whole sampling season, and these do not affect the marked individual or their behavior. These marked individuals are randomly distributed in the population, and all the individuals have the same probability of being sampled.

The method consists of capturing a sample of individuals belonging to the population under study, in this case, the field mice population. After capturing the individuals, the researcher marks them and release them again. The third step is to sample again, capture a new amount of individuals, and count how many of them are marked. These marked individuals belong to the first sample. We can calculate the population size by using the Lincoln Index or any other index.

The Lincolns Index states that to obtain the population size, the research must follow the following procedure:

1) Take an initial sample with n1 number of individuals

2) Mark all the sampled individuals and release them

3) Take a second sample with n2 number of individuals

4) Count the number of marked individuals m

To estimate the total number of individuals in this population, N, the following equation must be considered:

N = (n1 x n2)/m

In the exposed example, this is:

•n1= 500 individuals in the first sample

•n2= 200 individuals in the second sample

•m= 40 individuals in the second sample that were previously marked

as they were part of the first sample

N = (n1 x n2)/m = (500 x 200) / 40 = 2500 individuals

The approximate size of the field mice population is 2500 individuals.

Answer from: Quest

69 is the correct math for the amino acids

Answer from: Quest

Centriole.centrioles are present in animal cells but are usually absent in plant cells.

Other questions on the subject: Biology

Biology, 22.06.2019 00:20, ayoismeisjjjjuan

6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?

Answers: 1

continue

Biology, 22.06.2019 05:30, mahogany139

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

Answers: 1

continue

Biology, 22.06.2019 06:30, brandon436

In 2015, about ten percent of total u. s. energy consumption was from renewable energy sources. renewable energy plays an important role in reducing greenhouse gas emissions. when renewable energy sources are used, the demand for fossil fuels is reduced. sanjay and his family want to cut back on their use of non-renewable resources at home. they are thinking of an alternate way to heat their home without adding more greenhouse gases or pollutants to the environment. which renewable resource would not fit into their plan? a) solar power b) burning wood c) constructing a wind turbine eliminate d) generating hydroelectric power

Answers: 1

continue

Biology, 22.06.2019 09:00, Ciarrathereal

Toorale man murder mystery < - your lab link 1. how was the toorale man found? 2. what did archaeologists learn about the burial? why is the burial important? 3. what information were the scientists able to learn from the skeleton itself? 4. why is the question of whether the injuries came from a stone or steel weapon important? how could scientists distinguish between the different types of weapons? 5. what did the carbon dating and soil testing tell scientists about toorale man? why are the dates interesting for scientists?

Answers: 3

continue

You know the right answer?

Try this for yourself. Suppose you want to estimate the number of field mice in a small field. One d...