How Do Parental Genotypes Influence Skin Color Variation in Offspring?

  • Thread starter Thread starter colton4286
  • Start date Start date
  • Tags Tags
    Variation
AI Thread Summary
Skin color variation in offspring is influenced by multiple genes, leading to a polygenic inheritance model. The discussion compares two couples' genotypes: Couple 1 (aaBbCC) and Couple 2 (AaBbCc), analyzing their potential offspring's skin color range. A Punnett square can be used to determine the probability of dominant traits at each gene locus. The couple with the most diverse skin color outcomes is likely the one with the highest phenotypic dominance across the genes. Ultimately, neither couple can produce offspring with the extreme genotypes AABBCC or aabbcc due to their genetic limitations.
colton4286
Messages
13
Reaction score
0
Recall that some traits, such as skin color, appear to be controlled by several genes. This creates a continuum of variation. If this polygenic explanation for the inheritance of human skin pigmentation is correct, how do the skin colors of the following 4 individuals compare? Which of the couples could have children with the widest range of skin colors? Couple 1: aaBbCC and aaBbCC; Couple 2: AaBbCc and AaBbCc

My thoughts: Create a punnett square for each gene to find the probability of dominance at each loci. Would the couple with the widest range of skin colors be the couple with the largest phenotypic dominance for all 5 genes?
 
Physics news on Phys.org
What must the parents have to produce offspring of AABBCC? aabbcc?
 
Each parent must have a copy of the dominant or recessive allele but that can't happen with the genotypes they have.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
View full post »

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

Biology Genetics- how many of each genotype?
Replies
1
Views
4K
Biology What are the genotypes for different flower colors in a monohybrid cross?
Replies
1
Views
2K
How Do Mendelian Genetics Apply to Martian Traits and Rat Coat Colors?
Replies
2
Views
4K
Biology How Do Genetic Traits Determine Physical Characteristics?
Replies
4
Views
3K
My Thoughts On the Heritability of Intelligence and Eugenics
2
Replies
64
Views
9K

Hot Threads

Recent Insights

Back
Top