I my god they give you so much homework I feel sorry for you
The sickle cell anemia is genetic disorder, in which the red blood cell becomes sickle shaped instead of its biconcave shape. This condition is a autosomal recessive disorder.
The carriers are the people, who are unaffected by the disorder, but carry one recessive allele, which can cause the disease in next generation. They are hetrozygous for the trait.
It is estimated that 1 out of every 10 or 10% African American are the carriers of the Sickle cell anemia.
So, the correct answer is Approximately, 10% African Americans is a carrier for sickle-cell anemia.
Answer:
Hypothesis
Explanation:
In the scientific method used by scientist, The Hypothesis has a tentative or proposed explanation that gives report of an observed or measured phenomena. The hypothesis is usually based on previous observations which fails to be explained by available scientific theories. It is the starting point for further investigation that can be tested through experimentation.
Answer: hope this helps
Explanation: A single-replacement reaction is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:
A+BC \rightarrow AC+B
In this general reaction, element Ais a metal and replaces element B, also a metal, in the compound. When the element that is doing the replacing is a nonmetal, it must replace another nonmetal in a compound, and the general equation becomes:
Y+XZ \rightarrow XY+Z
Yis a nonmetal and replaces the nonmetal Zin the compound with X.
Metal Replacement
Magnesium is a more reactive metal than copper. When a strip of magnesium metal is placed in an aqueous solution of copper(II) nitrate, it replaces the copper. The products of the reaction are aqueous magnesium nitrate and solid copper metal.
\text{Mg}(s)+\text{Cu(NO}_3)_2(aq) \rightarrow \text{Mg(NO}_3)_2 (aq) + \text{Cu}(s)
This subcategory of single-replacement reactions is called a metal replacement reaction because it is a metal that is being replaced (copper).
Answer:
pretty sure it reflects the light back
Explanation: