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63 Cards in this Set
- Front
- Back
What is the basis in DNA that makes each specied unique?
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Order
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DNA is copied through the process of?
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Replication
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What can cause the DNA sequence to change a genetic disorder or a mutation?
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Toxic chemicals or radiation
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Mutations that occur in the ________ can be passed along to offspring.
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Sex cells
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He concluded that traits are inherited through the passing of genes onto offspring.
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Gregor Mandel
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When a karyotype has ONE chromosome in a pair instead of 2, it is called?
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monosomy
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When a karyotype has THREE chromosomes in a pair instead of 2, it is called?
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trisomy
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Genes code for the making of?
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proteins
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Genes that determine strains and are made up of DNA sequences are called?
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genotype
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The way something looks is called
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phenotype
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Hemophilia and color blindness are carried on the X chromosome, they are examples of what type of trait?
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sex-linked
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What 2 processes cause the genetic basis for evolution?
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mutation & sexual reproduction
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What is the phenotypic ratio of AA* a, A=tall a=short
punnett square |
4 tall; 0 short
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What is the genotypic ratio of Tt* Tt
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1TT; 2Tt; 1tt
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Humans that have sex chromosomes, XX, are?
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female
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Humans that have sex chromosomes, XY are?
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male
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2 NORMAL parents have a child that has cystic fibrosis, which is recessive, BOTH parents must be?
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carriers
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The allele that dominates or covers up the other one is
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dominant
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An organism that has 2 different alleles for a trait, for example Aa, is called?
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heterozygous
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A genotype with 2 alleles that are the same, for example AA or aa, is called?
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homzygous
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The allele that is covered up or seems to disappear?
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recessive
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Sex cells are formed during?
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meiosis
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Body cells are formed during?
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Mitosis
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Female sex cell is _____
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egg
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Male sex cell is _____
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sperm
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Process that takes place in the ovaries and testes
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Meiosis
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Process that creates body cells
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Mitosis
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Do individuals or populations evolve?
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populations
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After several generations, populations of the same species that are sperated by mountains, lakes or valleys begin to show genetic differences, this is called?
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geographic isolation
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Darwin observed finches that were related, but differed because of geographic isolation (seperated by ocean) the finches were best suited for their own?
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island environment
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Pollution form the industrial revolution would cause the black moth population to?
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increase
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After the Pollution is cleaned up and the lichen returned on the trees, the black moth population would?
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decrease
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Survival and reproduction of organisms that are best suited to their environment is called?
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Natural Selection
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Who believed that NATURAL SELECTION was the main cause for evoluation?
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Charles Darwin
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The change of organisms over time is?
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evolution
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Who are the main causes of pollution, habitat destruction, and loss of biodiversity
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humans
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Immigration and an increase in birth rate will cause a population to?
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increase
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Emigration and increase in death rate will cause a population to?
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decrease
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Which trophic level has the most stored energy?
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producers
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In a food chain, only 10% of the energy stored in an organism is passed to the next trophic level, the remaining energy is used for life processes, and the rest is lost as?
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heat
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Another word for producer is?
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autotroph
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Another word for consumer is?
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heterotroph
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A group of organisms that look alike and can reproduce and create fertile offspring?
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species
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Components in the environment that are non-living and never were alive
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abiotic
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Components in the environment that are produced by, or caused by living organisms
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biotic
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An organism that creates its own food source from the sun's energy
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producer
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An organism that eats only producers
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herbivore
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An organism that eats other animals
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carnivore
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An organism that eats both producers and consumers
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omnivore
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3 main nutrient cycles in the environment
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carbon
nitrogen phosphorus |
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Which system in the body exchanges gases?
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respiratory
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What organs are a part of the digestive system
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mouth, esophagus, stomach, intestines, liver, galblaadder, pancreas, colon
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Which 2 body systems work together to produce movement?
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skeletal
muscular |
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What body system sends signals to the muscles and organs
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nervous
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Where is DNA located in the cell
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nucleus
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What 3 components make up nucleotides
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sugar
phosphate base |
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Why does DNA replicate
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to prepare cells for mitosis
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How many chromosomes does a normal human body have
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46
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How many chromosomes does a normal human sex cell have
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23
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Antibiotics are used to cure
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Bacterial diseases
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Viral diseases are prevented with the use of
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vaccines
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Bacteria are
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living
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viruses are
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nonliving
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