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Variation in Species

QuestionAnswer
What leads to variations in traits? DNA mutations
What do most mutations do to organisms? no impact, or maybe kill the organism
Other than mutation, what causes variation in a species? sexual reproduction
Sexual reproduction leads to variation because of the ___ of DNA? mixing
How many chromosomes come from each parent? 23
When 2 chromosomes contain the same set of genes, but are not identical – they are called ___ chromosomes? homologous
The versions of the genes that you have- the actual letter code is the __? genotype
The visible traits that you get from your genes are called __? phenotypes
What process involves segments of DNA from homologous chromosomes being swapped from one chromosome to another? crossing over
What are the 2 main sources of variation in species? genetic mutation and sexual reproduction
Created by: russcrick
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