Top answers

What is genetic dominance?

Genes are sections of our DNA that have a specific genetic code. When you're born you get a copy of each gene from your mother and a copy of each gene from your father. These copies are called alleles. For e...
RW
Answered by Ruth W. • Biology tutor
4500 Views

What makes DNA molecules so stable?

The main bonding in DNA which renders the double helix structure so stable is that of hydrogen bonds. Between the complementary base pairs, hydrogen bonds connect the two strands of the helix. There are 3 H ...
SA
Answered by Steven A. • Biology tutor
59970 Views

Describe the structure of haemoglobin and how it is suited to it's function?

Two alpha subunits and two other subinits that vary depending on th type of haemoglobin, either beta,delta, gamma or epsilon. Each subunit contains on heme group. Heme group contains four pyrol rings and a c...
OF
Answered by Ollie F. • Biology tutor
16620 Views

How are Xerophytes adapted to dry environments?

Start by considering what Xerophytes are, they are plants that live in dry conditions. What are the problems with dry conditions? Well, the big problem is maintaining a constant amount of water in the body. ...
LC
Answered by Luke C. • Biology tutor
32535 Views

What is an oxygen debt?

Anaerobic respiration occurs when there is no oxygen available and so produces an oxygen debt. This debt is equivalent to the total amount of oxygen required to oxidise the lactic acid formed from this proce...
GJ
Answered by Grace J. • Biology tutor
71905 Views