True for false: A single gene determines the sex (male or female) of a human.

Efficiency is a. the percentage of energy lost to the surroundings as heat. b. the percentage of energy that is actually used to perform work. c. the entire amount of energy. d. the time it takes for half of the energy to be used.

The moth species Biston betularia has two color morphs, or variants. One has a speckled white and black color, while the other is all black. In the early 1800s in England, the distribution was 10,000 speckled morphs to 1 black morph.

Identify the statement about meiosis that is incorrect Select one: a. Pairing of homologous chromosomes b. Four haploid cells are formed c. At the end of meiosis the number of chromosomes are reduced to half d. Two cycle of DNA replication occurs

Facts about biology

Evolution is a A. prediction because it makes an educated guess about events that will occur in the future. B. law because it has been proven without exception under certain stated conditions. C.

What factors determine soil consistence?

What are the levels or organization in biology?

In what grade do you take biology I took it in 6th grade, just wondering

What type of mutations do scientists look for in a molecular clock

What is the Law of Conservation of Energy? Question 10 options: Energy cannot be created, but can be destroyed as it transforms. Energy can be created and destroyed as it converts to other forms.