Nondisjunction is defined as the failure of the chromosomes to seperate during cell division. An animal with a haploid number of 6 (diploid number of 12) undergoes meiosis, and at the meiosis II (cells are already haploid from the meiosis I), nondisjunction occurs. The mature ovum will contain 6+1 chromosomes (n+1) because there is an extra chromosome from the nondisjunction. The second polar body will contain 5 chromosomes (normal would be 6) because the second polar body did not receive that extra chromosome due to nondisjunction. In the event of fertilization of the abnormal ovum with a normal sperm, the zygote will be a diploid (12 chromosomes) normally but since the ovum as an extra chromosome from the nondisjunction then the zygote will have an extra chromosome (13 chromosomes). One pair of chromosomes has an extra single chromosome and this is called a trisomy.
True. Most do not transmit the disease
<em>The Weasel sleeps in a burrow, during the hottest part of the day.
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<h2>Further explanation
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Weasel is a common name for a group of predatory mammals (carnivores) of the Viverridae tribe. These animals are mostly nocturnal and good climbers.
Weasel types:
- Weasel (Cynogale bennettii)
- Weasel rase (Viverricula malaccensis sin. Viverricula indica)
- Civet Weasel (Paradoxurus Hermaphroditus)
- Root Weasel (Arctogalidia trivirgata)
- Weasel Galing (Paguma larvata)
- Binturong (Arctictis binturong)
- Linsang (Prionodon linsang)
- Tenggalung (Viverra tangalunga)
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Details
Class: High School
Subject: Health
Keywords: Weasel, Weasel types, Animals
