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Biology (spring)
| Question | Answer |
|---|---|
| allows for genetic variation | crossing over |
| change in dna sequence is called | mutation |
| genes contain the instructions for assebling | proteins |
| photosynthetic algae serve as | producers |
| term that describes small genetic change | microevolution |
| animals that eat both producers and consumers | omnivores |
| dna molecule produce by combining dna from different sources | recombinant dna |
| competitive exclusion is the result of | competition |
| what is not recycled in the ecosystem | energy |
| the original source of most energy in the ecosystem is | the sun |
| what has become the most important evironmental chance on Earth? | human activity |
| In taxonomy a group is called a | taxon |
| most sex linked genes are located on the | x chromosome |
| Why are fossil fuels not renewable | they take hundreds of millions of years to form |
| when an organism moves out of the population | emigration |
| colorblindness is more common in males then in females because | it is located on teh x sex chromosome and men only have one x sex chromosome |
| What is not part of Darwin's theory | inheritance of acquired traits |
| dna | deoxyribose, phosphate, nitrogen base (a,t,c,g) |
| nitrogen fixation primarily is carried out by | bacteria |
| change in a population over successive generations is called | evolution |
| three types of rna | mRNA, tRNA, rRNA |
| natural selection acts directly on | phenotype |
| one species benefits and the other is harmed | predation or parasitism |
| X and Y are called | sex chromosomes |
| when a farmer breed his/her best lifestock | natural selection |
| in general how much more concentrated do toxin become as they move up a trophic level? | 10x |
| Human females produce eggs that have | x chromosomes |
| Lack of an abiotic or biotic resource in the environment, which causes a population size to decrease is called a | limiting factor |
| CO2 is released by | burning fossil fuels |
| shift in allele frequency towards extremes of a range | disruptive selection |
| several classes make up | phylum |
| normal human karyotype | 46 chromosomes |
| organisms that live in the same tree can do so because | they occupy different niches |
| organism that break down dead organisms | decomposers |
| in genetic drift change occurs as a result of | chance |
| a man with a blood, and a women with b blood can produce offspring that have | a,b,ab,o |
| organism that feeds on plants are called | herbivores |
| the total frequency of alleles in a population, for one trait is | 100% |
| variation in human skin is an example | polygenic |
| failure of chromosomes to seperate during meiosis | nondisjunction |
| using renewable resource while ensuring they are not depleted | sustainable development |
| ability for an organism to survive | fitness |
| shape of a dna molecule | double helix |
| situation in which the allele frequency remain constant | genetic equilibrium |
| dna fingerprinting is based on the fact that | people have different dna (except identical twins) |
| genetic drift works on populations that are | small |
| in human males have | x and y chromosomes |
| two species cannot occupy the same niche because of | competitive exclusion principle |
| an endangered species is | in danger of going extinct |
Created by:
cgiboney