Top answers


What are the main differences between mitosis and meiosis?

Mitosis Human cells have 23 pairs of chromosomes (diploid - 2 copies of each chromosomes). This is a form of cell devision which makes an exact replica of the cell that is dividing. The cell grows and the DN...
JY
Answered by Jun Yu C. Biology tutor
5010 Views

Explain the cardiac cycle

basic anatomy of the heart: chambers, valves, structural difference between right and left side of the heart pulmonary vs. systemic circulation blood flow through the heart
UT
Answered by Umamah T. Biology tutor
3014 Views

Use your knowledge of natural selection to suggest how the peacock's tail has evolved.

Mutation Competition Females are attracted to the tail Reproduce with males with an extravagant tail Offspring pass on the characteristic of an extravagant tail Offspring inherit the gene for producing an ex...
NF
Answered by Nathan F. Biology tutor
7960 Views

Describe the differences between mitosis and meiosis and when would these occur in mammalian cells?

Both mitosis and meiosis use cytokinesis for the division of genetic informaton between cells, however mitosis creates identical copies known as daughter cells after just one round of cell division, whereas ...
AD
Answered by Aimee D. Biology tutor
3224 Views

How should I tackle an unseen poem during the exam?

First, it is always a good idea to read through the poem twice so you have an idea of what the poem is about. Once you've completed this, pick out at least one theme you think runs really strongly throughout...
MK
4425 Views