Inheritance Flashcards
(15 cards)
What is genotype
The difference in genes
What is a phenotype
The variation in genes that you can see in an organism
What is an allele
An allele is a version of a gene that forms a specific characteristic
What is genetic variation
Variation determines by genotype
What is environmental variation
Variation affected by the phenotype
Examples of environmental variation
Nothing
Examples lf genetic variation
Eye choir
Hair type
Hair colour
Examples of genetic and environmental variation
Heights
Shoes size
Skin colour
What is a chromosome
Tightly coiled DNA
what is a gene
A section of DNA that codes for a specific characteristic
What is reproduction.
The passing down of characteristics to an organisms offspring in order to ensure the species survival
What happens in asexual reproduction.
Identical copies of the 1 parent will be made
What happens in sexual reproduction
Chromosomes are passed from both parents meaning genetic variation occurs
Advantages of asexual reproduction
-> less energy used
-> quicker, as only one parent is needed
-> if the parent is well adapted to the environment then the offspring also will be
Disadvantages of asexual reproduction
-> there is no genetic variation amongst the species
-> if a diesease were to affect the organism, tje organisms would not be able to adapt and evolve to .
