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63 Cards in this Set

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