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1. Which of the following influence cell division during normal development (cho

ID: 215421 • Letter: 1

Question

1. Which of the following influence cell division during normal development (choose any answers that apply):

growth hormones

cell death

DNA damage

transmembrane receptors

current stage of the cell cycle

2. Loss-of-function mutations in tumour suppressor genes (choose any answers that apply):

are called oncogenes

are called proto-oncogenes

are recessive

are dominant

do not permit determination of the dominance relationship

prevent cells from progressing to the next stage of the cell cycle

prevent cell division

promote progression to the next stage of the cell cycle

promote cell division

can be inherited by viable progeny in the next generation.

cannot be inherited by viable progeny in the next generation.

3. Loss-of-function mutations in proto-oncogenes (choose any answers that apply):

are called oncogenes

are called tumour suppressor genes

are recessive

are dominant

do not permit determination of the dominance relationship

prevent cells from progressing to the next stage of the cell cycle

prevent cell division

promote progression to the next stage of the cell cycle

promote cell division

can be inherited by viable progeny in the next generation.

cannot be inherited by viable progeny in the next generation.

4. Gain-of-function mutations in tumour suppressor genes (choose any answers that apply):

are called oncogenes

are called proto-oncogenes

are recessive

are dominant

do not permit determination of the dominance relationship

prevent cells from progressing to the next stage of the cell cycle

prevent cell division

promote progression to the next stage of the cell cycle

promote cell division

can be inherited by viable progeny in the next generation.

cannot be inherited by viable progeny in the next generation

5. Gain-of-function mutations in proto-oncogenes (choose any answers that apply):

are called oncogenes

are called tumour suppressor genes

are recessive

are dominant

do not permit determination of the dominance relationship

prevent cells from progressing to the next stage of the cell cycle

prevent cell division

promote progression to the next stage of the cell cycle

promote cell division

can be inherited by viable progeny in the next generation.

cannot be inherited by viable progeny in the next generation.

a.

growth hormones

b.

cell death

c.

DNA damage

d.

transmembrane receptors

e.

current stage of the cell cycle

Explanation / Answer

1) Growth hormones and current stage of cell cycle influence cell division.

2) are recessive, promote progression to the next stage of the cell cycle, promote cell division, can be inherited by viable progeny in the next generation.

3) do not permit determination of the dominance relationship, prevent cells from progressing to the next stage of the cell cycle, prevent cell division, can be inherited by viable progeny in the next generation

4)  do not permit determination of the dominance relationship, prevent cells from progressing to the next stage of the cell cycle, prevent cell division, can be inherited by viable progeny in the next generation

5) are called oncogenes, are dominant, promote progression to the next stage of the cell cycle, promote cell division, can be inherited by viable progeny in the next generation