Question
Which example would likely result in new combinations of DNA in an individual's offspring?(1 point)
Responses
A spontaneous mutation to the DNA in a lung cell during mitosis.
A spontaneous mutation to the DNA in a lung cell during mitosis.
UV radiation causing a mutation in a skin cell resulting in melanoma.
UV radiation causing a mutation in a skin cell resulting in melanoma.
Sister chromatids crossing over during mitosis in a heart cell.
Sister chromatids crossing over during mitosis in a heart cell.
Homologous chromosomes failing to separate during meiosis.
Responses
A spontaneous mutation to the DNA in a lung cell during mitosis.
A spontaneous mutation to the DNA in a lung cell during mitosis.
UV radiation causing a mutation in a skin cell resulting in melanoma.
UV radiation causing a mutation in a skin cell resulting in melanoma.
Sister chromatids crossing over during mitosis in a heart cell.
Sister chromatids crossing over during mitosis in a heart cell.
Homologous chromosomes failing to separate during meiosis.
Answers
GPT-4o mini
The example that would likely result in new combinations of DNA in an individual's offspring is:
**Homologous chromosomes failing to separate during meiosis.**
This process, known as nondisjunction, can lead to gametes with an abnormal number of chromosomes, which can result in new combinations of genetic material when fertilization occurs. The other options typically involve mutations in somatic cells (non-reproductive cells) or errors during mitosis, which do not contribute to the genetic makeup of offspring.
**Homologous chromosomes failing to separate during meiosis.**
This process, known as nondisjunction, can lead to gametes with an abnormal number of chromosomes, which can result in new combinations of genetic material when fertilization occurs. The other options typically involve mutations in somatic cells (non-reproductive cells) or errors during mitosis, which do not contribute to the genetic makeup of offspring.