Refer to the figure above, what happened to the chromosomes that are labeled “nondisjunction”?Chromosomes are stuck to each other and do not move.Sister chromatids fail to separate/split and the entire chromosome move to one pole of the cell.Chromosomes stat to look like flowers Homologous paired chromosomes fail to separate/split and the entire chromosome move to one pole of the cell.
Question
Refer to the figure above, what happened to the chromosomes that are labeled “nondisjunction”?Chromosomes are stuck to each other and do not move.Sister chromatids fail to separate/split and the entire chromosome move to one pole of the cell.Chromosomes stat to look like flowers Homologous paired chromosomes fail to separate/split and the entire chromosome move to one pole of the cell.
Solution
The term "nondisjunction" refers to the failure of homologous chromosomes or sister chromatids to separate properly during cell division. There are two types of nondisjunction:
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In the first type, sister chromatids fail to separate during the second division of meiosis (Meiosis II). As a result, both sister chromatids move to the same pole of the cell, leading to one gamete receiving both sister chromatids and the other gamete receiving none.
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In the second type, homologous chromosomes fail to separate during the first division of meiosis (Meiosis I). This means that both members of a homologous pair go into the same daughter cell.
In both cases, the result is an imbalance in chromosome number, with some cells having too many and others having too few. This can lead to genetic disorders in offspring if these cells are involved in reproduction.
Similar Questions
Non-disjunction can occur if __________ chromosomes fail to separate during meiosis I.Question 8Select one:a.homologousb.heterologousc.defectived.mutated
When chromosomes fail to separate during meiosis, this is known asMultiple Choicecrossing over.nondisjunction.translocation.random separation.mitosis.
What occurs when chromosomes do not separate during meiotic divisions?Multiple choice question.nondisjunctioncrossing overconjugationfertilization
7. Failure of normal chromosome separation during cell division is called1 pointindependent assortment.crossing over.cytokinesis.nondisjunction.
REQUIRED13.What is a good definition for non-disjunction?the exchange of genes between homologous chromosomes, resulting in a mixture of parental characteristics in offspring.the failure of homologous chromosomes or sister chromatids to separate normally during nuclear division, resulting in an abnormal distribution of chromosomes in the daughter nuclei.a change in the DNA sequence of an organism.a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.
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