Non-disjunction can occur if __________ chromosomes fail to separate during meiosis I.Question 8Select one:a.homologousb.heterologousc.defectived.mutated
Question
Non-disjunction can occur if __________ chromosomes fail to separate during meiosis I.Question 8Select one:a.homologousb.heterologousc.defectived.mutated
Solution
Non-disjunction can occur if homologous chromosomes fail to separate during meiosis I. So, the correct answer is a. homologous.
Here's a step-by-step explanation:
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Meiosis is a type of cell division that reduces the number of chromosomes in a parent cell by half to produce four gamete cells. This process is what allows for genetic diversity through sexual reproduction.
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Non-disjunction is an error in meiosis (or mitosis) where chromosomes do not separate properly. This results in cells with an abnormal number of chromosomes, which can lead to genetic disorders.
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In meiosis I, homologous chromosomes (one from each parent) pair up and should separate so that each daughter cell gets one chromosome from each pair.
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If these homologous chromosomes fail to separate (non-disjunction), one daughter cell will get both chromosomes and the other will get none. This leads to an abnormal number of chromosomes in the resulting gametes.
Similar Questions
Nondisjunction of the ______ chromosome during meiosis can produce offspring that are XXX or XXY.Multiple choice question.13thXY21st
What occurs when chromosomes do not separate during meiotic divisions?Multiple choice question.nondisjunctioncrossing overconjugationfertilization
What term refers to the failure of homologous chromosomes to separate during meiosis I?Multiple choice question.Crossing overNondisjunctionDiploidSynapsis
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.
REQUIRED11.Refer to the figure above, during which phases of Meiosis could nondisjunction happen?Both Meiosis I and IIMeiosis II onlyNon disjunction is a myth; it does not occur at allMeiosis I only
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