What Explanation Is Generally Given for Lethality of Monosomic Individuals

question 15

Multiple Choice

What explanation is generally given for lethality of monosomic individuals?

• A)The loss of a single chromosome is not generally lethal,unless the individual is inbred.
• B)Cells count the number of chromosomes they have and will undergo apoptosis when the chromosome number is incorrect.
• C)Monosomic chromosomes cannot undergo mitosis correctly.
• D)The gametes of monosomic individuals cannot undergo meiosis,and this is lethal.
• E)Monosomy may unmask recessive lethals that are tolerated in heterozygotes carrying the wild- type allele.

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