Your descendants have fortunately inherited your fascination with rodent genetics. Fifty thousand years after the original volcanic eruption, your descendants return to the island where the two populations are still separated. They repeat the same experiments that you carried out. Their data indicate there is no reproductive isolation between members of A1 and A2. DNA sequences from randomly chosen individuals from the two populations are shown here – A1 ATAAGA A1 ACAAGA A1 ACATGA A2 TCATTT A2 TCATTG A2 TCATTT A)Name one mechanism by which differences between A1 and A2 became fixed in the two populations (not how the differences arose in the first place).
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
Your descendants have fortunately inherited your fascination with rodent genetics. Fifty thousand years after the original volcanic eruption, your descendants return to the island where the two populations are still separated. They repeat the same experiments that you carried out. Their data indicate there is no reproductive isolation between members of A1 and A2.
DNA sequences from randomly chosen individuals from the two populations are shown here –
A1 ATAAGA
A1 ACAAGA
A1 ACATGA
A2 TCATTT
A2 TCATTG
A2 TCATTT
A)Name one mechanism by which differences between A1 and A2 became fixed in the two populations (not how the differences arose in the first place).
The given DNA sequences from randomly chosen individuals from the two populations are :
A1 ATAAGA
A1 ACAAGA
A1 ACATGA
A2 TCATTT
A2 TCATTG
A2 TCATTT
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