Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Bella S2 Cells & DNA
S2 Inheritance & DNA
| Question | Answer |
|---|---|
| What is a gamete | a sex cell |
| Where does fertilisation take place? | Oviduct (fallopian tube) |
| What is the name of the cell formed when fertilisation takes place? | Zygote |
| What is the definition of fertilisation? | When the nucleus of the sperm fuses with the nucleus of the egg (ovum) |
| Why is an egg bigger than a sperm | Cytoplasm contains a food store |
| What is a gene? | Part of a chromosome that codes for a characteristic |
| What are genes and chromosomes made of? | DNA |
| What parts of DNA join the two strands together? | Bases |
| Why can DNA be used to identify people? | Because everyone's DNA is different (except identical twins) |
| When might you want to use DNA to identify a human? | To prove who the parents are To identify a body part or unrecognisable body To identify a criminal |
| When might you want to use DNA to identify an animal? | To identify what meat is in your food To identify the owner of a dog that doesn't clean up after it. To match bones to species |
| What are the risks of using DNA profiling to identify a human | Mistakes can still be made by people handling evidence. DNA can easily be planted at a crime scene Families can be torn apart by paternity tests. |
| From what cells can you collect DNA for profiling? | From skin cells From sperm From saliva From blood |
| How is DNA treated to perform DNA profiling | DNA collected DNA cut into fragments by enzymes DNA fragments put into gel electrophoresis DNA gets separated into banding patterns |
| What does it mean if a gene is DOMINANT | It will always be present |
| How many genes control a characteristic | Two |
| Gender, eye colour and tongue rolling are examples of what type of variation? | Discrete |
| Height, mass and hand span are examples of what type of variation? | Continuous |
| Name an example of an environmental variation | Tatoos, Scars etc |
| What are alleles? | Different forms of a gene |
| What is the name for the differences between the members of a species | Variation |
| What combination of sex chromosomes do you have if you are female? | XX |
| Name a genetic disorder | Down's syndrome Huntington#s disease Cystic Fibrosis Muscular Dystrophy |
| How many elements are there in DNA? | five |
| How many chromosomes are ther in a human sperm? | 23 |
| What are the elements in DNA? | Carbon, Hydrogen, Oxygen, Nitrogen, phosphorous |
| Give an example of continuous variation | Size of...anything |
| Give an example of discrete variation | Tongue rolling, gender, handedness Anything observable... |
| What is the function of the chloroplast | Site of photosynthesis |
| What percentage chimpanzee are you? | 98% |
Created by:
nscobie
Popular Science sets