Which mode of inheritance produces heterozygotes with phenotypes that differ from either homozygote but typically more closely resembles one homozygous phenotype than the other?"
A) complete dominance
B) incomplete dominance
C) codominance
D) epistasis
E) incomplete penetrance
Answer:
B) incomplete dominance
Explanation:
Incomplete dominance occurs when the dominant allele of a gene is not able to mask the expression of the recessive allele completely. This results in the expression of a phenotype in the heterozygous genotypes that differ from both homozygous genotypes. However, the phenotype of the heterozygote is closer to one of the homozygous genotypes.
For example, the petal color in four o'clock plant is controlled by a gene with two alleles R and r. Here, the "R" allele can not produce enough pigment in heterozygous conditions to completely mask the expression of the "r" allele and the phenotype of the "Rr" plant is "pink". On the other hand, the phenotype of "RR" plant is red while that of the "rr" plant is "white".
Somatostatin from hypothalamus inhibits the glands growth hormone
Answer:
Diameter of the individual hair
The benefit is that dendrites process and and receive incoming information, based on which they fulfill two functions, they either make the neuron generate electrical impulse, or they can prevent it from doing so.
Answer:
The load distance is 4.9 cm
Explanation:
Given;
Effort applied to the lever, E = 120 N
Load overcame by the effort, L = 50 kg = 50 x 9.8 = 490 N
distance of the effort from the fulcrum, e = 20 cm
let the distance of the load from the fulcrum = d
The following simple set-up is used to illustrate this lever;
-----------------------------Δ-------------------------------
↓ 20cm d ↓
120 N 490 N
Lever operates on the principle of moment, so take moment about the pivot (fulcrum);
490(d) = 120(20)
d = (120 x 20) / (490)
d = 4.9 cm
Therefore, the load distance is 4.9 cm