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what is a test cross used for and how do you know what genotypes to cross?

A test cross is used to discover the genotype of an individual by crossing two parents to see the phenoypic ratio of the offspring produced. A homozygous recessive individual (one with two recessive or small...
ER
Answered by Emily R. • Biology tutor
21578 Views

The point A lies on the curve y=5(x^2)+9x , The tangent to the curve at A is parralel to the line 2y-x=3. Find an equation to this tangent at A.

y-(any value of the function)=0.5(x-(any value in the domain)) e.g. Point with point A being (1,14) The answer would be y-14=0.5(x-1)
RA
Answered by Rehman A. • Maths tutor
4219 Views

Describe and explain the vertical motion of a parachutist which jumps out of an aeroplane at time t=0 and then releases the parachute shortly after reaching terminal velocity at time t=T. (Assume air resistance is not negligible).

We need to understand both what this question is asking of us, and what the question tells us. We are asked to investigate the motion of the parachutist, therefore in this case we need to apply Newton’s Laws...
TD
11091 Views

How can a company benefit from economies of scale?

Economies of scale is the concept that as a company increases its output, cost per unit will decrease as fixed costs are spread over a larger number of units. This is known as internal economies of scale and...
FL
30463 Views

Speaking Test: How can I improve my pronounciation?

It is important to remember, having an accent is normal. You can live in the country for decades and still have an accent. It is however equally important that you pay attention to the intonation of a langua...
IL
Answered by Isabel L. • German tutor
2578 Views