Genetic Engineering
- Created by: Sabeeha Remtulla
- Created on: 28-04-14 22:09
Intro
Genetic Engineering:
Moving pieces of genetic material from 1 species to another
- Gene therapy
- Cloning
- Gene manipulation
Embryo Research
Find cures for serious illnesses using tissue or cells from embryos
Research concentrates on stem cells in order to repair damaged organs/body parts
Embryonic stem cells removed from early embryos > process destroys embryo
Stem cells also taken from adults, to harm + helped patients
ESC taken from unused embryo > IVF
Embryos created in lab using donated eggs and sperm = no cures
Problematic = different genetic makeup à rejection
Best option: making new embryos by therapeutic cloning
Issue: supply of human eggs/ poor women paid for eggs
UK law: embryos cannot be experimented on past 14 days human embryo not to be placed in animal, human cloning not allowed + genetic structure of cell not altered while part of embryo
Genetically Engineered Crops
+ Greater yield, better taste/quality, resistant to pests/disease à environmentally friendly, don’t require chemical pesticides à reduce/end hunger/malnutrition
- Critics: Threaten environment, cause havoc through cross pollination, long term effects on human health à unknown atm
Selecting Human Genes:
Embryos selected for screening for diseases
Also to create healthy baby to treat sick sibling or select sex of child
Embryos created by IVF + single cell removed from each genetic testing. One embryo selected for implantation + rest discarded
Sex Selection
Involves destroying unwanted/unsuitable embryos à embryos person = problematic
- Baby treated as commodity
- Slippery slope à designer babies
Fertilisation = 24 hours, personhood = no specific moment
Peter Singer: up to 14 days embryo has capacity to divide into 2 and become identical twins. S/times, join back tog into 1 blastocyst, if in vitro, 1 cell removed + tested + developmental process unharmed. Each cell in blastocyst has capacity to become human è no individuality; w/o it, organism cannot be seen as person = doesn’t have human rights acc to Singer
Newborn baby harmed in medical procedures for cells à taken from umbilical cord, so no.
Genetic Testing & Screening:
Tests for genetic diseases, who should know results?
Private à employees, insurance co’s, gov’t?
= Discrimination
+ only probability, possibility of laboratory error
Genetic Screening:
Testing section of pop known to be at risk of condition
Adv: person knows, change in lifestyle
Disadv: Discrimination à defining normal/abnormal in society
Gene Therapy
Correct, alter, replace genes = problematic
Sickle cell anaemia = terrible but natural immunity from malaria
Alteration of Human Genes:
- Targeted to somatic (body) cells à parents genome changed / few ethical issues, used successfully h/e given to foetus before birth = we decide which genetic predispositions are to be altered … Divisions btwn genetically rich and poor
- Or germ (egg and sperm) cells à parents egg + sperm cells changed with aim of passing changes to future generations (germ line)
Stem Cell Research
Cells that change into other types of cells
- In v early embryo: totipotent = become any type of body cell
- Adult: pluripotent à capacity to become variety of cells, not all, does not harm adult, child, placenta of newborn; destroys embryo however.
Foetal stem cells from aborted foetuses same potential as embryonic stem cells.
Threshold of cloning à illegal UK, tried elsewhere
Oppose à confusion in family r/ships (discrimination) parents see children as objects than humans
Unnecessary to use embryonic stem cells in search for cures:
ESC plastic, unstable à malignant, cancer
- Found in umbilicial cord blood, placenta blood + every other organ
- Adult successful, embryonic theoretical stage (low success)
- Adult overcome prob of immune rejection (embryonic rejected)
Natural Law
NL:
Self-preservation
secondary precept deduced:
no embryo research à destroys life
Research justified: preserves life by curing diseases
GM Crops:
feeding + t/f, preserving life
Living harmoniously in society
à Crops would help other countries have same good crops
Against animals used to produce pharmaceuticals to grow organs for transplants,
contrary to God-given purpose
H/e, NL sees animals as lower beings à used to feed humans?
Situation Ethics
Situation Ethics:
Human beings = ‘makers + selectors + designers’ who act morally when in control of genetics.
No opp to IVF/embryo research
Considered loving thing if only other option is to destroy
Esp = research cures diseases
T/f even testing and screening for diseases is fine à most loving thing?
Creating embryos specifically for research X
Creating to save child à ‘loving’?
Alteration of human genes: somatic is fine, germ line à affects future generations, teleological à outcomes?
Utilitarianism:
- Assesses individual situation
- Works if poss to assess results of GE + ER & decide whether favour all concerned
- Better to save many lives in future at cost of few embryos
- Hedonic Calculus applied to sufferers now
- But early embryos can’t feel pain à won’t work
- Benefits of GE + ER justifiable using HC
- Pleasures brought a/b by cures for diseases (Parkinsons) outweigh cost of embryos
- Cost of Health Service + success to be considered
Bentham à all sentient creatures à problem with using animals for pharmaceuticals to grow human organs
Singer à interests of animals alongside humans
If only one animals = OK, but large numbers = concern for Singer
Impossible to know effects though of GM crops for instance
Peter Singer: up to 14 days embryo has capacity to divide into 2 and become identical twins. -> blastocyst --> 1 removed, tested, no p. Each cell capacity to become human, no individuality = not person
Kantian Ethics
GE + ER hard to universalise
Creating embryos for stem cell research à none left to reproduce = die out
Treating people as means to an end X
Against if foetus considered person
Respect for persons + requirement for Human Rights to be respected.
Informed consent à genetic medicine, testing, screening, adult stem cell research à truly humanising
Respect for autonomy + privacy essential to Kantian ethics
Consequences ignored b/c acting out of duty, no account of compassion or love
Christian Ethics
Human life = intrinsic value, using embryos for sake of another human = wrong
Embryo also has intrinsic worth
No obj to using adult stem cells or modification of animals/ plants
NL Based, positive a/b advances in human life, never at expense of another human
Sacred from conception
Recognise need for humans to use God-given intelligence to transform + humanise world
Comments
No comments have yet been made