Herve Levesque

3 Questions 67 Answers 0 Followers

Questions related from Herve Levesque

Zircon preserved in the center of a desintegration aureole ?

how can we explain that a cristal of zircon observed in a granite thin section (like in the following image) seems not affected while the surrounding biotite has formed a desintegration aureole?...

06 December 2022 2,118 3 View

Are supernumerary sepals of some tomato cultivars due to mutagenesis?

More than 5 sepals are frequently observed on tomatoes especially commercial varieties. Do you think this can be the unwanted result of mutagenesis applied during the plant's breeding program?

27 September 2017 6,920 5 View

Are there observable characteristics to distinguish two unicellular organisms being conjugating from a single organism simply dividing by mitosis?

photographs from many unicellular organisms (especially paramecium) are given to illustrate the sexual reproduction via conjugation but it is not evident to accept that the two cells represented...

15 July 2015 4,252 4 View