Biology
what is an adaptation ?
a feature of an organism that helps it survive in its environment
what adaptations does a predator have ?
sharp teeth
sharp claws
eyes at the front of its head
what adaptations does prey have ?
camoflage
what do adaptations do ?
help organisms compete for what they need
what do animals compete for ?
food
water
shelter
mates
what does endangered mean ?
few left of a species
how do organisms adapt to cope with seasons ?
hibernate
lose leaves
move
grow thick fur
change colour
what adaptations do polar bears have ?
white fur
thick coat
what does extinct mean ?
none of a species left
what is variation ?
the differences between organisms of the same species
where is dna found in a cell ?
the nucleus
what is a species ?
a group of organisms with similarities that can breed together
what does a plant need to grow ?
water
light
carbon dioxide
in what cell is dna stored ?
the nucleus
what happens in fertilization ?
the sperm and egg join
why do children look like their parents ?
they have dna inherited from them
what is the function of dna ?
to code for characteristics
if two terriers have a puppy togther, what will it look like
it will look like a terrier
what is the name of genetic info ?
dna contains genetic info
how genetic info passed down ?
half of the babies dna comes from the mother , another from the father
how many pairs of chromosomes do babies have from each parent ?
23
how many chromosomes do we have altogther ?
46
what is dna ?
chemical codes for out characteristics
what is a gene ?
a section of dna that codes 1 characteristic
what is a chromosome ?
a large section of dna holding many genes