Multiple Choice
In domestic cats (Felis catus), how many chromosomes are present in a typical somatic cell at the end of interphase?
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3. Extensions to Mendelian Inheritance
Sex Chromosome
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which type of chromosome lacks a p arm?
A
Metacentric chromosome
B
Submetacentric chromosome
C
Acrocentric chromosome
D
Telocentric chromosome
Verified step by step guidance1
Understand the structure of chromosomes: chromosomes have two arms separated by a centromere. The shorter arm is called the p arm, and the longer arm is called the q arm.
Review the types of chromosomes based on the position of the centromere: Metacentric (centromere in the middle, arms equal length), Submetacentric (centromere slightly off center, arms unequal), Acrocentric (centromere near one end, very short p arm), and Telocentric (centromere at the very end, no p arm).
Identify which chromosome type lacks a p arm by definition: since the p arm is the short arm, a chromosome with the centromere at the very end will not have a p arm.
Recall that a Telocentric chromosome has the centromere at the terminal end, meaning it completely lacks a p arm.
Conclude that the chromosome type lacking a p arm is the Telocentric chromosome.
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