Biology: Chapter 4; Variation And Inheritance Flashcards
In asexual reproduction…
Offspring are genetically identical to each other and the parent.
Name the two types of variation.
Continuous and Discontinuous
In sexual reproduction…
Offspring are genetically different to the parents.
New genes arise…
Through the mutation of existing genes.
Mutation rates can be increased by…
Ionising radiation.
Chromosomes are…
Linear arrangements of genes and are made from DNA.
Chromosomes occur in …
Pairs and therefore so do genes.
Different forms of genes are called…
Alleles.
DNA controls…
Which proteins are made in a cell.
Scientists can analyse an organism’s DNA to produce …
‘A genetic profile.’
State how, in humans, the chromosomes which decide the sex are represented.
XX- female
XY- male
When gametes are formed…
The number of chromosomes is halved.
Who’s experiments have provided the basis of modern genetics.
Gregor Mendel.
Name one disease which is caused by faulty genes and is also inherited.
Cystic Fibrosis
_ _ _ _ _ can be transferred artificially from one organism to another?
Genes
