Answer:
c. Either anaphase I or II of meiosis
Explanation:
During anaphase I homologous chromosomes separate, and they end up at opposite poles of the cell each having 2 chromatids, thus producing two daughter cells each with half the original chromosome number.
The two daughter cells resulting from meiosis I enter meiosis II, and during anaphase II the chromatids separate to opposite poles of the cells, producing a total of four daughter cells with half the original chromosome number and only one chromatid per chromosome.
- If something goes wrong during <u>anaphase I</u> one pair of the homologous chromosomes will migrate together to one pole of the cell, and after going through meiosis II there will be 4 daughter cells, two of them having an extra chromosome and two of them lacking one.
- If something goes wrong during <u>anaphase II</u>, the homologous chromosomes have separated but the chromatids of one of the chromosomes will migrate together, producing a total of 4 daughter cells: 2 normal, one with an extra chromosome and one lacking a chromosome.
Answer:
ever wonder if your dog really really loves you — or if he’s just in it for the kibbles?
Alas, scientists haven’t figured out exactly how our dogs feel about us. But a study published this week in the journal PLOS One has yielded fresh insight into how dogs see us. It adds to existing research showing that — much like humans, other primates and even goats — our canine friends use specific regions of their brain to “process” our faces.
“Our study provides evidence that human faces are truly special for dogs, as it involves particular brain activity,” study co-author Dr. Luis Concha, an associate professor at the National Autonomous University of Mexico’s Institute of Neurobiology, told The Huffington Post in an email. “To dogs, the human face is no ordinary thing.”
Explain:
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