A set of flashcards for GCSE Biology B1 on the OCR exam board. Questions relate specifically to the specification.
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Created by Josh Price
about 9 years ago
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Copied by Usman Rauf
about 9 years ago
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What is a fertilised cell called?
Where are the instructions to control how an organism _______ and ______ found?
What are these called?
What are genes?
Proteins may be ________ or _______.
What is the difference between these?
What are chromosomes made up of?
What are some characteristics determined by....
Genes?
The Environment?
Both?
Body cells contain pairs of chromosomes. How many of each pair do sex cells contain?
Why might the genes in a pair not be exactly the same?
The alleles you inherit is called your _______.
Your _______ is what you look like.
How many copies of a dominant allele to have its feature? And a recessive allele?
How many alleles does a person usually have for each gene?
Define Homozygous.
Define Heterozygous.
Why do offspring have similarities to their parents?
Why do different offspring from the same parents differ from each other?
How many dominant alleles do you need to show the associated characteristic?
Recessive alleles?
Which sex chromosomes do males have?
Females?
How does the Y chromosome make a baby male?
What are Huntington's disease and cystic fibrosis caused by?
Dominant or recessive alleles?
What are the symptoms of Huntington's disease?
What are the symptoms of Cystic Fibrosis?
What are some treatments for cystic fibrosis?
What is the danger of carrying a recessive allele?
What are the uses of genetic testing for screening adults, children, and embryos?
Amniocentesis:
How?
When?
Risks?
Chronic Villus Sampling (CVS)
How?
When?
Risks?
What is genetic screening?
What is pre-implantation genetic diagnosis (PGD)?
What are the implications that need to be considered when testing adults a fetuses for alleles that cause genetic disorders?
What are the implications of genetic testing by insurance companies?
What are the implications of genetic testing by employers?
What are the implications of genetic testing by the police?
What is a clone?
Bacteria, plants, and some animals can reproduce _______ to form clones.
How does this happen?
Any differences between clones are due to.......
What are some examples of plants producing clones naturally?
How do clones of animals occur?
What is the difference between a____ and e______ stem cells?
Give an example of when adult stem cells are used.
What happens when someone else's cells are used in a transplant?
