Top answers

Name the 5 stages of mitosis in order

I remember using this handy mnemonic: "IPMAT". I nterphase P rophase M etaphase A naphase T elophase It may be useful to you to write this down straight away on an extra piece of paper at the start...
LR
Answered by Luke R. • Biology tutor
7921 Views

What are the differences between DNA and RNA?

There are three main differences between DNA and RNA: 1. RNA has the base uracil instead of the base thymine . These bases are very similar and differ by only one chemical group! 2. RNA nucleotides have a ri...
CC
Answered by Charlotte C. • Biology tutor
4596 Views

Distinguish between active and passive immunity

Active immunity is due to the over production of antibodies by the organism itself after the body's defence mechanisms have been stimulated by the invasion of foreign micro-organisms. Whereas, passive immuni...
MR
Answered by Mani R. • Biology tutor
7726 Views

What is a dominant allele?

An allele that has the same effect on the phenotype whether it is present in homozygous or heterozygous state. Dominant alleles mask the effect of recessive alleles.
MR
Answered by Mani R. • Biology tutor
7280 Views

Why are organisms within a species genetically different?

1) Crossing over - in Prophase I of meiosis, non-sister chromatids in the same bivalent (i.e. chromatids on separate chromosomes within a homologous pair) can exchange alleles, creating new combinations. 2) ...
KF
Answered by Katherine F. • Biology tutor
4591 Views