For questions regarding mathematical concepts with applications to Biology.
Questions tagged [biology]
404 questions
2
votes
2 answers
How to learn biomathematics?
I'm currently an undergraduate math student and researching on the internet I discover that exists an area called "biomathematics". Looks so interesting. They use the graph theory and topology to describe the cells and DNA structure. Was love at…
2
votes
0 answers
Question about the cell cycle
A diploid cell in G1 has 6 chromosomes. How many chromosomes and how many chromatids are present in each of the following stages?
Here is what I am guessing
G1: 6 chromosomes ; 6 chromatids
G2: 6 chromosomes ; 12 chromatids
Prophase: 6 chromosomes;…
Kyla
- 21
1
vote
1 answer
Biology Discrete Population model
I'm stuck on a particular part of a long question, so I will post the entire question and tell you guys where I'm stuck.
Q: The size of a locust population in each year is given in terms of the population in the previous year, according to the…
user152911
- 21
1
vote
0 answers
Momentum between collisions and alignment in Mathematical Biology.
Hello looking for direction, not solution.
Originally I have been working with the Cuker-Smale system and we had an open space for where Momentum has been conserved in the open space, as in there have been no boundaries. I am currently trying to…
R.ron
- 159
1
vote
1 answer
What is the probability that I have a allele if my mom/cousin have it?
Say my mom has a gene (it's one of those regular gene, ignore X and Y chromosome)
The gene exist in p% of the population.
Things get complicated due to that p. If p is 100%, for example, then of course the probability that I have the gene to is…
user4951
- 1,714
1
vote
1 answer
Sigmoidal function
Can someone explain what a sigmoidal function is?
I have "$S(x)$ is a sigmoidal function with $S'(x)\ge0$ and $\lim_{x\rightarrow-\infty}S(x)=0$
but I really don't understand what $S(x)$ is
I found an expression for $S(x)$ using the Naka-Rushkin…
user181304
- 345
1
vote
1 answer
sum of exponential series in population growth model
I am a biology student who has recently started studying population dynamics. I've recently found a model of population growth where the number of organisms at an age class (N) is calculated by:
N(t+1)=Ne^(-m) where m is the natural…
Biologist
- 13
0
votes
1 answer
Reaction-Diffusion question
Can somebody help me with this question,I don't have a clue really.
Q: I The spread of an impulse from one end of a one-dimensional nerve fibre is modelled by the partial differential equation $$\frac{\partial u}{\partial t}=\nu \frac{\partial^2…
user152911
- 21
0
votes
0 answers
How can I replicate the model of a paper that describes an animal's foraging radius?
I'm trying to follow the algebra of a paper that describes a model used to estimate a bird's foraging radius. It takes an energetics approach.
$T$ is the foraging cycle, $E_{ma}$ is adult basal metabolism, $E_{mc}$ is chick basal metabolism (divided…
adkane
- 223
0
votes
1 answer
Find the next gen frequency of diploid selfing and selection model
So we have the genetic diploid model for the spread of an advantageous gene:
genotype
$AA$
$Aa$
$aa$
zygote frequency
$P$
$Q$
$R$
relative fitness
$1+s$
$1$
$1$
Now that this model applies to the species that selfs, can we express $P'$…
Yuki.F
- 751
0
votes
1 answer
fur color frequency
Organism X requires seven parents to breed. Let the dominant and recessive alleles of a certain trait (fur color) be represented by Y and y.
In a certain population of X, $99.2\%$ of the population has the Y phenotype.
a. Compute the frequency of…
Saketh Malyala
- 13,637
0
votes
1 answer
Significance of Inflection Points in Biological Application
This problem appears in our calculus book. It asks to compute the maximum concentration of drug in the blood and the time when the maximum occurs as well as to find the number of inflection points and then it asks for the time at which the…
rog
- 19
0
votes
1 answer
serial dilution
If $0.01$ is $10$ to the negative 2nd power then what is $0.2$?
I am having trouble making all the test tubes a number that can be added together.
Test tube A is $.01 = 10$ to the negative 2nd power
Test tube B is $.1 = 10$ to the negative 1st…
kody
- 1