Asked by Willa Knuckles on Jun 26, 2024
Verified
During prophase I, each chiasma represents
A) the remnants of the nuclear envelope.
B) the remnant of the nucleolus.
C) a newly formed haploid gamete.
D) a site of crossing-over.
E) the site where sister chromatids are connected.
Prophase I
The first stage of meiosis I where homologous chromosomes pair up and exchange genetic material through recombination.
Chiasma
An X-shaped site in a tetrad usually marking the location where homologous (nonsister) chromatids previously crossed over.
Crossing-Over
A process in which genetic material (DNA) is exchanged between paired, homologous chromosomes.
- Describe the processes involved in meiosis, including crossing-over and the formation of tetrads.
Verified Answer
ZS
zainab sohailJun 29, 2024
Final Answer :
D
Explanation :
During prophase I of meiosis, a chiasma represents a site of crossing-over, where genetic material is exchanged between homologous chromosomes, leading to genetic variation in the resulting gametes.
Learning Objectives
- Describe the processes involved in meiosis, including crossing-over and the formation of tetrads.