test 41- genetics Flashcards
1
Q
- each …. has another one exactly like it.
- it’s the sex …. which determines an individual’s sex.
- the Y …. is responsible for male characteristics.
p.s. all 3 spaces are answered with the same term.
A
chromosome
2
Q
- …. is caused by an extra chromosome.
- a foreshortened head, upward slanting eyes and a flat nasal bridge are some of the characteristic physical features of …. .
- the chance of a women having a baby with …. increases considerably with age.
p.s. all 3 spaces are answered with the same term.
A
down’s syndrome
3
Q
- …. is enclosed in the central nucleus of the cell.
- the whole nature of a cell depends on the kinds of …. .
- during division of a cell, the …. duplicates itself.
p.s. all 3 spaces are answered with the same term.
A
DNA (deoxyribonucleic acid)
4
Q
- brown eyes are …. over blue eyes.
- if one parent has a …. characteristic from both his/her parents, he/she must pass it on to his/her children.
- gregor mendel discovered that tall pea plants were …. .
p.s. all 3 spaces are answered with the same term.
A
dominant
5
Q
- each individual has a unique set of genes …. from the parents.
- sickle cell disease is an …. disease of the blood.
- there is a chance of 1 in 4 that cystic fibrosis will be …. by a second child born to parents of a child with the disease.
p.s. all 3 spaces are answered with the same term.
A
inherited
6
Q
- some diseases tend to run in families without observing any known rules of …. .
- with some diseases the effects of …. and environment cannot always be distinguishing.
- the material from which chromosomes are formed governs …. .
p.s. all 3 spaces are answered with the same term.
A
inheritance
7
Q
- the child of normal parents may be affected by …. in an ovum or a sperm.
- a sudden change in the genetic makeup of an organism is known as …. .
- …. leads to people being born with a defect.
p.s. all 3 spaces are answered with the same term.
A
mutation
8
Q
- a sex-linked …. transmits haemophilia.
- sickle-cell anaemia is the result of a defective recessive …. .
- in britain, the commonest disease due to a single pair of recessive ….. is cystic fibrosis.
p.s. all 3 spaces are answered with the same term.
A
gene
9
Q
- the chance that a child will be born with a serious …. defect is 1 in 50.
- some …. disorders can be cured.
- …. engineering has provided has a plentiful supply of insulin.
p.s. all 3 spaces are answered with the same term.
A
genetic