9a: Inheritance and selection

Identical twins are formed from
1. the same egg/ same sperm
2. the same egg/ different sperm
3. different egg/ same sperm
4. different egg/ different sperm
Non-identical twins are formed from
1. different sperms/ different eggs
2. the same egg/ same sperm
3. different egg/ same sperm
4. the same egg/ different sperm
Which of the following are not true of chromosomes
1. they are found in red blood cells
2. they are found in the nucleus of all cells
3. they are found in the egg cell
4. they are found in the sperm cell
The human sex cells contain how many pairs of chromosomes?
1. 23
2. 46
3. 26
4. 92
How many chromosomes are there in human cells (other than sex cells)
1. 46
2. 23
3. 26
4. 92
The process where the sperm fuses with the egg is called
1. fertilisation
2. intercourse
3. pregnancy
4. birth
Genes contain the instructions that we
1. inherit
2. find
3. are due to the environment
4. are caused by mutations
Which of the following doesn't apply to selective breeding
1. The breeders let nature take its course
2. The breeders choose animals with characteristics they want
3. The breeders, breed out the features they do not want
4. Many modern animals are bred by in this way
Which of the following doesn't apply to cloning
1. sexual reproduction
2. asexual reproduction
3. genetically identical
4. reproduction without sex cells
Which of the following is not true of cloning in plants
1. requires two plants
2. quick to carry out
3. can get many offspring from one parent
4. offspring are genetically identical
Fertilisation happens in the
1. fallopian tube
2. uterus
3. ovary
4. cervix
The womb is also called
1. the uterus
2. the ovary
3. the cervix
4. the oviduct
Fertilisation is
1. when a sperm joins with an egg
2. when sperms are released
3. when eggs are released
4. when an egg implants in the uterus
The fertilised egg from IVF is implanted in
1. the uterus
2. the ovary
3. the testes
4. the egg tube
Selective breeding is when
1. animals and plants are bred in order to pass on desired features
2. animals are bred with other species to make them faster
3. animals are allowed to breed naturally to get maximum variation in offspring
4. animals are not allowed to breed to prevent the spread of disease
Animals and plants are all made up of
1. cells
2. food
3. photosynthesis
4. protein
The male sex cells are called
1. sperm
2. the egg
3. the penis
4. the testicles
The female sex cell is called the
1. egg
2. sperm
3. uterus
4. ovary
A sperm is adapted to do its job by having a ………………so that it can swim to the egg
1. tail
2. head
3. flipper
4. fin
When two sex cells join together they transfer genetic information from both parents. This is called
1. inheritance
2. variation
3. genetics
4. DNA
Features that are not inherited from the parents are called
1. environmental
2. genetic
3. DNA
4. cancer
Amino acids combine to make
1. protein
2. fats
3. carbohydrates
4. minerals
The reactions in cells take place
1. in the cytoplasm
2. in the nucleus
3. in the cell membrane
4. in the vacuole
The chromosomes
1. carry the genetic instructions to make a new person
2. control our eye colour
3. make the cells divide to produce specialised cells
4. cause cancer to spread
A genetically identical copy of a plant or an animal is called a
1. clone
2. freak
3. mistake
4. mutation
Identical twins are an example of
1. natural clones
2. unnatural cloning
3. mutations
4. variation
GM foods are made by
1. altering the genetic information of a food
2. altering the size of a food
3. altering the time of year we plant a food
4. changing the amount of watering a plant gets
IVF means In Vitro Fertilisation. What does 'In Vitro' mean?
1. In glass
2. In the laboratory
3. In plastic
4. In a test tube
Cancer is caused by
1. cells growing out of control or mutations DNA
2. cells growing normally but too slowly
3. too many strands of DNA
4. large amounts of red blood cells forming a clot in the artery