Answer: C
Explanation: An introduccion should, as its name suggests, introduce to the topic we are about to talk about and what are the reasons behind whatever we are writting about.
A reader who reads the introduccion should know ,after having read it, what are we going to talk about and why we wrote about that topic. Some details might be included there but it have to be more as a summary.
The Oregon trail
Reason: Gold
The kind of variable in the responses “Democrat”, “Republican”, “Independent”, “Other”, and “No Response” is a categorical variable since the choices does not associate with any kind of unit.
Literally speaking, categorical variables are variables that fall into a specific category. Categorical variable is also known as qualitative variable.
Answer:
A. polygenic inheritance
Explanation:
The type of non-Mendelian inheritance exemplified in human eye color is polygenic inheritance. In polygenic inheritance, a single trait is determined by the additive effect of more than one gene. Several gene combine together to determine a trait. Such traits are not definite, they are usually within a range spectrum, examples are height, hair color and eye color. Eye color is reported by researchers to be controlled by up to 10 genes
On the contrary monogenic inheritance are responsible for traits which are controlled by a single gene such as the ability to roll the tongue
They are protecters and they help kill off mice
