Answer: the need of evolution
Explanation: Charles Darwin saw the differences between the birds beaks in the Galapagos island. The beaks were different because of the different food that the environment provides.
"The set of observable characteristics of an individual..." is what i found on google, so i'm guessing its a.
hope this helps :)
Answer:
See the answer below
Explanation:
<em>The chance that a child from two people with sickle cell trait will have normal RBCs remains the same irrespective of the amount of oxygen in the environment.</em> From the cross:
AS x AS
AA AS AS SS
Hence, the chance of having a child with normal RBCs in both high and low-oxygen environments is 1/4 or 25%.
The chance that a child will have sickle cell disease is also 1/4 or 25%.
The possible genotypes in a Punnet's square can be seen in the attached image