The correct answer is: a. n+1, n+1, n-1, n-1
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during mitosis or meiosis. There are three forms of nondisjunction:
1. failure of a pair of homologous chromosomes to separate in meiosis I ,
2. failure of sister chromatids to separate during meiosis II, and
3. failure of sister chromatids to separate during mitosis.
As a consequence of nondisjunction abnormal chromosome numbers appears. If nondisjunction occurs during the meiosis I (anaphase I), this means that at least one pair of homologous chromosomes did not separate. The consequence is two cells that have an extra copy of one chromosome and two cells that lack that chromosome.
D. all of these
Explanation:
All of the provide option clearly denotes how matter are transferred between organisms.
Based on the amount of available matter the earth is conserved. Matter is only transferred and transformed as it goes between organisms and the environment.
- Plants obtain their nutrients from the soil and they use them for various life processes. Thus, matter is exchanged between the physical environment and living organisms.
- Matter is also transferred from one living organism to another. Plants are consumed animals.
- When living organism decay, their matter are released back into the physical environment.
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Conservation of matter in chemical reactions brainly.com/question/2190120
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If the DNA strand is mutated it can cause genetical and physical defects. Just as an extra chromosome can cause Trisomy 21 which cause Down Syndrome.
Answer:
Cell Membrane
Explanation:
The unique structure of the cell membrane allows small substances (like oxygen or carbon dioxide) to easily pass through.
