Scientists are unlocking the secrets of the human genome as well as the genomes of other organisms. This means we can now find genes that serve particular roles or cause particular diseases.
Which term is given to the entire genetic material of an organism?
What is the difference between gene technology and genetic engineering?
Gene technology includes a number of techniques which use our knowledge of the genome, including genetic engineering
Genetic engineering involves modifying the genome, while gene technology only involves testing the genome
Genetic engineering includes a number of tecniques which use our knowledge of the genome, including gene technology
Which is a symptom of cystic fibrosis?
Inability to break down phenylalanine, resulting in brain damage
Thick mucus which can cause breathing, digestive, and reproductive problems
Red blood cells become sickle-shaped and unable to carry enough oxygen around the body
If a child is born to two carriers of the cystic fibrosis allele, what is the probability it will also be a carrier?
The probability is 0.25, as the cross is Ff × Ff so a quarter of the offspring are likely to have the disease
The probability is 0.75, as three quarters of the offspring will have at least one f allele
The probability is 0.5 as the cross is Ff × Ff so half the offspring are Ff
What is the probability of two carriers of the cystic fibrosis variant having a child with the disease?
1 in 4
Which tests are used in order to carry out genetic testing on a fetus while in its mother's womb?
Amniocentesis and chorionic villus sampling (CVS)
Amniocentesis and pre-implanatation genetic diagnosis (PGD)
Chorionic villus sampling (CVS) and pre-implanatation genetic diagnosis (PGD)
Which of the following is an example of a false negative test being reported?
A couple is told that they have a 25 per cent chance of having a child with cystic fibrosis but when they are tested again one parent is FF.
A couple is told that neither of them is a carrier of cystic fibrosis, but their child develops cystic fibrosis.
A couple is told that neither of them is a carrier of cystic fibrosis, and their child does not develop cystic fibrosis.
What is risk?
The probability of something happening
The consequences if something happened
The probability of something happening, together with the consequences if it did happen
Which could be used as a vector?
A plasmid, bacterium, or virus
A bacterium or virus
Which organism was genetically engineered in order to produce human insulin? - Higher