_______________ are the two parts of a chromosome.

Question

BlackTom AI · Accepted Answer

The question asks: '_______________ are the two parts of a chromosome.' Let's evaluate each option in turn.
Option 1: sister chromatids. This is correct because, during cell division, a replicated chromosome consists of two identical sister chromatids held together at the centromere; together they constitute the two parts of a chromosome prior to separation.
Option 2: Chlorophyll. Chlorophyll is the green pigment in plants involved in photosynthesis, not a structural part of a chromosome. Its presence has no relation to chromosome architecture, so this choice is incorrect.
Option 3: chromatin. Chromatin refers to the complex of DNA and protein that makes up chromosomes in their non-condensed, functional form within the nucleus. While chromatin is related to chromosomes, it is not the term for the two parts of a replicated chromosome; rather, chromatin is the material that condenses to form chromosomes. This makes the statement misleading, so this option is not accurate in this specific context.
Option 4: DNA. DNA is the genetic material carried within chromosomes, but a chromosome is not composed of two DNA molecules; rather, a replicated chromosome contains two sister chromatids, each containing an individual DNA molecule. Therefore, this option does not correctly identify the two parts of a chromosome.
Overall, the only choice that correctly identifies the two parts of a chromosome is option 1, sister chromatids, because it reflects the standard description of replicated chromosomes during cell division.

_______________ are the two parts of a chromosome.单项选择题

类似问题

Which of the following denotes A’s sister chromatid?

Question at position 43 What is shown in this picture? two different chromosomessister chromatidshomologous chromosomescentrosomeeuchromatin

Select all of the following letters that represent sister chromatids. The purple color represents the paternal chromosomes and the green color represents the maternal chromosomes.

Select all of the following letters that represent sister chromatids. The purple color represents the paternal chromosomes and the green color represents the maternal chromosomes.

Which of these chromosomes are sister chromatids?

What was the world's first widely adopted biodiversity policy?

The aim of the Paris Agreement is to ensure that the earth’s preindustrial temperature is not exceeded by more than º Celsius.

The IPCC's mission is to Blank ______.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单