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Evolution
Question | Answer |
---|---|
What type of reproduction that creates identical offspring? | asexual |
What process produces non-identical gametes? | meiosis |
Genetic variability is created by sexual reproduction, different alleles for a gene and what? | mutations |
What are alternate forms of a gene called? | alleles |
What type of reproduction leads to genetic variability? | sexual reproduction |
Gametes produced through meiosis are not identical because of independent assortment AND what process? | crossing over |
A beneficial one of these can lead to a new allele for a gene. A harmful one of these often leads to genetic defects and death | mutations |
The gene for eye color might have a blue and brown one of these? | alleles |
If an organism has two different alleles for a trait they are said to be what? | heterozygous |
If a population is at a genetic equilibrium (gene frequencies remain the same) then evolution is or is not occurring? | is NOT. |
If natural selection is favoring a particular form of a trait and non of the other forms (black color only) then what type of selection is most likely occurring? | directional |
If a population is undergoing evolution then the frequency of genes is changing or not changing? | changing |
An individual who is Bb is a carrier of a recessive allele which promotes genetic variability. A Bb individual for a trait is said to be what? | heterozygous |
If a population is stable with 30% black and 70% brown, the population is in what? | genetic equilibrium. |
If natural selection is favoring two extreme forms of a trait (black and white but not brown), what type of selection is most likely occurring? | disruptive |
If natural selection is favoring the most common form of a trait then what type of selection is most likely occurring? | stabilizing |