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
tino4ka555 [31]
3 years ago
12

why the frequency of sickle cell trait is so much higher in sub-Saharan Africa than in most other parts of the world?

Biology
1 answer:
Maksim231197 [3]3 years ago
3 0
Because they have less resources to fight off disease and nothing to use for immunity. Sub Sahara Africa is also very poor
You might be interested in
Researchers have crossed two true-breeding lines of peas that differ in the color of their leaf tissue: dark green vs pale green
amid [387]

Answer:

150 individuals

Explanation:

If the dark phenotype is determined by a dominant allele at a single locus, the ratio of dark green phenotype to pale green phenotype at F2 should be 3:1 according to the Mendelian standard.

200 to 3:1 = 150:50

<u>Hence, if 200 F2 individuals were characterized, one would expect the number of dark green individuals to be 150 while the pale green would be expected to be 50.</u>

3 0
3 years ago
How does an atom become an ion
Hatshy [7]
When it loses or gains a electron
6 0
3 years ago
Read 2 more answers
Regrowth of grass, ferns, wildfloeers after a wildfire is an example
ss7ja [257]
Regeneration reproduction It grow back regrowth
4 0
3 years ago
A praying mantis is an insect that feeds off small insects and therefore it is a predator or prey​
stiv31 [10]

Answer:

Predator

Explanation:

Since a Praying Mantis is an animal that naturally preys on others, it would be considered a Predator

3 0
3 years ago
Hich definition is the best for “semipermeable membrane”?
melamori03 [73]

Answer:

C

Explanation:

in a semi-permeable membrane, very specific amounts of materials are allowed through. This is particularly helpful in the human body because the body can then create "charge differences" between ions. In these charge differences, neurons can fire and pretty much all movement in your body is achieved because of these membranes. They are also called selective membranes

8 0
3 years ago
Other questions:
  • While on an expedition to south america, you discover a new plant species. although you are certain it is a gymnosperm, you are
    10·1 answer
  • How does embryonic development and cell differentiation in
    14·1 answer
  • Does the temperature of water<br> rise while it is boiling?
    5·1 answer
  • What is the best evidence telling you whether this cell is diploid or haploid?
    5·1 answer
  • Are these right so far and could some one help me with the last one
    8·1 answer
  • Why dont antibiotics work to kill viruses?
    12·2 answers
  • Someone who is heterozygous for recessive allele that cause a disorder
    9·1 answer
  • What is the melting point of ice?
    6·1 answer
  • What three conditions can we have with gene mutations?
    15·1 answer
  • Explain what is happening below​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!