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23 Cards in this Set
- Front
- Back
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what is DNA?
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the blueprint of life instucting cells how to develope and how to function.
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what is a gene?
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squence of DNA that determines a particular trait.
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what is a dominant gene/ allele?
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more common gene or allele that over powers a recessive and shows up in a population more often.
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what is a recessive gene/ allele?
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a weaker, less common gene/ allele in a given pair.
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what is offspring?
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result of a cross of two parents.
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what are gametes
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reproductive cells that contain one half of an indivdual's DNA.
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what is heredity?
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the passage of gentic instructions from one generation to the next.
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what is asexual reproduction
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reproduction where an exact copy of the parents gentic material is passed on to the offspring. most common in simple one cell organims.
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what is sexual reproduction?
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ability to generate extensive amounts of genetic diversity, ability to produce variable offspring, some if which will have improved chances of survival in changing enviorments.
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what are organs?
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collection of tissues joined in structual unit to serve a common function.
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what are tissues?
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a group of cells with both shared structure and function.
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what are cells?
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the basic structual of all organisms.
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what is cell theory?
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all living organisms are composed of cells. they may be unicelluar od mulitcelluar. the cell is the basic unit of life. cells arise from pre-existing cells.
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what is an ecosystem?
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an involvement between communties.
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what is an organism?
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an individual animal, plant, or single-celled life form.
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what is an organ system?
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systems which work together to keep the body functioning normaly.
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what is the major role of the sketal system?
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to provide support for the body.
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what is the major role of the muscular system?
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to provide movement.
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what are the major organs of the sketal system?
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bones, cartliage,tendons, and ligaments.
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what are the major organs of the muscular system?
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sketal muscles and smooth muscles throughout the body.
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what is the major role of the cirulatory system?
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to transport nutrients, gases, ect...
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what are the major organs of the cirulatrory system?
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heart, blood vesseles and blood.
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what is the major role of the respiratory system?
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to provide gas exchnage between the blood and the enviorment.
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