Reproductio Flashcards
Why is a cells ability to divide important
Growth and repair
Why do almost all organisms have an even number of chromosomes?
-they come in pairs
-one from each parent
Suggest two advantages of asexual reproduction for bluebells
Takes less time
Many offspring produced
More energy efficient
Genetically identical offspring
Successful traits passed on
No need to disperse seeds
Explain why sexual reproduction could produce a new variety of onion
Fertilisation occurs
gametes fuse
DNA/genes mix
This causes variation
What is the chemical substance that makes up genetic material: DNA or protein?
DNA
What word is used to describe a small section of a DNA molecule that controls the synthesis of a protein?
A gene
One of the A bases shown in the diagram is substituted by a C base. (Diagram not needed) what happens to the protein synthesized by this part of the DNA molecule?
Different
Describe how proteins are synthesized
Any three from:
AAs make up a protein
Protein is a sequence of AAs
Bases form a code
The bases work in threes/triplets
Three bases code for one AA
