Question 14

A mother's germ cell contains mutated DNA, this mutation can be passed to her offspring.

Germ cells are the reproductive cells in an organism, and if they contain mutated DNA, this mutation can indeed be inherited by the offspring. Unlike somatic cells, which are not involved in reproduction, germ cells are directly responsible for passing genetic information to the next generation.

A) germ

This option is correct because germ cells, which include sperm and eggs, are the only cells that contribute to the genetic material of offspring. Any mutations present in these cells can be transmitted to the next generation, hence affecting their genetic makeup.

B) white blood

White blood cells are a part of the immune system and are classified as somatic cells. Mutations in these cells do not get passed on to offspring as they do not contribute to reproductive processes, making this option incorrect.

C) stem

Stem cells are versatile cells that can differentiate into various cell types but are not specifically reproductive cells. While mutations in stem cells can affect the individual, they do not directly pass mutations to offspring unless they differentiate into germ cells, which is a more complex and indirect scenario. Thus, this option is not the best answer.

D) somatic

Somatic cells are all the non-reproductive cells in an organism. Mutations occurring in somatic cells cannot be inherited by offspring since they do not participate in reproduction. Therefore, this option is incorrect as well.

Conclusion

The germ cell option is definitively correct as only mutations in germ cells can be passed down to offspring, directly influencing their genetic traits. All other options fail to meet this criterion, as they either refer to non-reproductive cells or are not involved in the transmission of genetic information to the next generation.