A man who heavily smokes has developed lung cancer. The tobacco smoke has caused mutations in some of the cells in his lungs, making them unable to stop reproducing and dividing. He is worried that his children, none of whom smoke, may have inherited the lung cancer from him. Under what circumstances might his concern for his children be justified?
If his smoking had already mutated the DNA in the cells in his lungs at the time his children were conceived, the mutations would have been passed to his children.
If he inherited a mutation which made him more susceptible to lung cancer, it may have been present in some of the gametes he produced and passed to his children.
If the mutation resulted from the duplication of a gene in his lung cells, his children would be at greater risk than if it were caused by a base pair substitution.
If the smoke had caused multiple different mutations in his lung cells, it would be more likely that one or more of the mutations would be passed to his children.
Answers: 2
Biology, 22.06.2019 00:00
The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s
Answers: 3
Biology, 22.06.2019 01:30
Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm
Answers: 1
Biology, 22.06.2019 07:00
What terms describes being out of water after being submerged
Answers: 1
Biology, 22.06.2019 09:00
Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm
Answers: 1
A man who heavily smokes has developed lung cancer. The tobacco smoke has caused mutations in some o...
English, 28.08.2020 22:01
Mathematics, 28.08.2020 22:01
Mathematics, 28.08.2020 22:01
Mathematics, 28.08.2020 22:01
Mathematics, 28.08.2020 22:01
English, 28.08.2020 22:01
English, 28.08.2020 22:01
Mathematics, 28.08.2020 22:01
Health, 28.08.2020 22:01
Mathematics, 28.08.2020 22:01