Question

multiple attempts not allowed. this test can only be taken once. force completion once started, this test must be completed in one sitting. do not leave the test before clicking save and submit. this test does not allow backtracking. changes to the answer after submission are prohibited. your answers are saved automatically. remaining time: 59 minutes, 45 seconds. question completion status: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 moving to the next question prevents changes to this answer. question 1 question 1 2 points save prior to mitosis, each chromosome of a eukaryotic cell consists of a pair of identical structures called 1. chromatin. 2. sister centromeres. 3. nucleoli. 4. sister chromatids.

Explanation:

• Chromatin is the complex of DNA and proteins that condenses to form chromosomes.
• Centromeres are the regions where sister chromatids are attached.
• Nucleoli are involved in ribosome synthesis.
• Sister chromatids are the two identical copies of a replicated chromosome joined at the centromere. Prior to mitosis, chromosomes replicate, and each chromosome consists of a pair of sister chromatids.

Answer:

1. sister chromatids.