1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
poizon [28]
4 years ago
6

Macy always thought there was only a few hair colors blonde, brown, and black however, when she actually began looking around sh

e saw varying shades of these hair colors. What is a possible reason for so many different hair colors
Biology
2 answers:
timurjin [86]4 years ago
5 0

Answer:

The most appropriate explanation would be the presence of two types of melanin in hairs.

In human hairs, two types of melanin are present: eumelanin and pheomelanin.

Eumelanin determines the darkness of the hairs, that is, it would determine if the hairs of a person would be black or brown.

Pheomelanin is responsible for orange or red colors of the hairs. In addition, on breaking down, it provides the hairs with colors like red, orange, yellow and white (complete breakdown of pheomelanin).

pashok25 [27]4 years ago
4 0

hair has two pigments, one being eumelanins  and the other is pheomelanins. *together they create all human hair colors)

eumelanins = how dark or light the hair is

Pheomelanins = is the reddish color which everyone has in them


You might be interested in
Neostigmine is an indirect-acting anticholinesterase drug that is used to treat urinary retention by: Multiple Choice1. increasi
Tom [10]

Answer:

Option D, stimulating bladder contractions.

Explanation:

Neostigmine has a amine structure due to which it can cross the blood brain but once it gets absorbed it is secreted rapidly.

Disabled Urinary retention is a scenario in which the bladder never gets full.  Neostigmine leads to accumulation of acetylcholine which triggers concentration based contractions in the urinary bladder. The muscarinic receptor on the urinary bladder contracts the bladder and the contraction gets stronger with passage of time

Hence, option D is correct

7 0
3 years ago
What is the difference between osmosis and diffusion?
Step2247 [10]
I'm pretty sure it's C
5 0
3 years ago
Read 2 more answers
As a person exercises, the carbon dioxide level in the blood increases. Which of the following systems are signaled by the nervo
dedylja [7]
Circulatory and excretory system
6 0
3 years ago
Read 2 more answers
What must occur for protein translation to begin?
Ronch [10]

The correct answer is D) The codon AUG must be identified.

What must occur for protein translation to begin is that the codon AUG must be identified.

The process starts when the 5AUG or start codon is identified. In the polypeptide chain, the 5AUG is the first amino acid. We are talking about Transition, the process when the genetic code in an RNA molecule has to be decoded in a polypeptide chain in order to deliver an amino acid sequence. In this complex transition system, there are important components included such as ribosomes, transfer RNA, and mRNA.

5 0
4 years ago
Read 2 more answers
Two sicentist do not agree o which type of grocery bag is better is better for the environment
statuscvo [17]

<em>paper is better</em> because its made of natural materials and the earth can absorb and decompose it.<em><u> Plastic is worse</u></em> because can get caught around animals necks and can be eaten which will cause stomach issues and later death.

4 0
3 years ago
Read 2 more answers
Other questions:
  • The less abundant part of the solution is called the _________. (1 point) A. Solution B. Solvent C. Solute D. Mixture
    9·1 answer
  • Which is true about the elongation of the leading strand during DNA synthesis?
    5·1 answer
  • To disprove spontaneous generation, pasteur used swan-necked flasks to allow entry of air to the boiled broth while blocking con
    14·1 answer
  • What is hepcidin?​
    8·1 answer
  • Why is an axolotl called a Peter Pan
    14·1 answer
  • Fossil fuels have been used for years as a source
    12·1 answer
  • Which layer of the uterus undergoes dramatic changes in thickness and structure during the uterine cycle responding to hormones?
    9·1 answer
  • What are antigen? A) B ) c) or d)
    13·1 answer
  • Which does the shift of the hydrogen absorption spectrum of a galaxy provide evidence for? Select the three correct answers.
    11·1 answer
  • Where does the trachea lead?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!