Top answers

Explain the concept of recessive and dominant alleles

Firstly it is always good to relate such a concept with an example that is easily remembered and therefore easily applied. Alleles refer to alternate forms of the same gene, which code for a particular trait...
JC
Answered by Juliette C. • Biology tutor
6494 Views

Solve x^2 -6x +5 = 0 and plot this graph between -10<x>10

To solve the equation you need to factorise the quadratic. This means you need to find 2 numbers that when multiplied make 5 and when added together make -6. These would be -1 and -5. You can now separate -6...
HH
Answered by Henry H. • Maths tutor
3694 Views

How do I solve 2x^2 -x -6 = 0

Firstly if you multiply the number infront of the x 2 by the number at the end to give -12. And then take the number infront of x, which is -1. Now we need to find two numbers that add to make -1 and multipl...
BB
Answered by Bei Bei M. • Maths tutor
5233 Views

Draw the reaction mechanism for the formation of ethanol from bromoethane and water and name the mechanism.

The first step is the draw out the molecules in question to understand what is happening in the reaction. You can see that the bromine atom has been substituted for an alcohol group (OH) in the enthane molec...
HH
Answered by Henry H. • Chemistry tutor
8614 Views

when do you use the imperfect and preterite tenses

The imperfect tense is used for actions that were repeated in the past or to describe a state in the past. eg. when I was younger I used to dance - cuando era pequena bailaba. the preterite tense is used whe...
CL
Answered by Charley L. • Spanish tutor
2140 Views