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Chapter 11: Q. 5 (page 294)

At metaphase I, homologous chromosomes are connected only at what structures?

a. chiasmata

b. recombination nodules

c. microtubules

d. kinetochores

Short Answer

Expert verified

The correct answer is option a

Step by step solution

01

Step 1. Introduction

Metaphase is one of the stage in the cell cycle in which all genomic material condense into chromosomes.

02

Step 2. The explanation for the correct option

Option a is correct because during metaphase I homologous chromosomes are aligned at the metaphase plate and are held together at the chiasmata.

03

Step 3. The explanation for the incorrect options

Option b is incorrect because during metaphase I homologous chromosomes are attached to chiasmata.

Option c is incorrect because during metaphase I microtubules attach to the fused kinetochores of the system chromatids.

Option d is incorrect because during metaphase I homologous chromosomes are held together at the chiasmata instead of kinetochores.

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Most popular questions from this chapter

How do organisms with haploid-dominant life cycles ensure continued genetic diversification in offspring without using a meiotic process to make gametes?

Does crossing over occur during prophase II? From an evolutionary perspective, why is this advantageous?

In a comparison of the stages of meiosis to the stages of mitosis, which stages are unique to meiosis, and which stages have the same events in both meiosis and mitosis?

A diploid, multicellular life-cycle stage that gives rise to haploid cells by meiosis is called a ________.

a. sporophyte

b. gametophyte

c. spore

d. gamete

Many farmers are worried about the decreasing genetic diversity of plants associated with generations of artificial selection and inbreeding. Why is limiting random sexual reproduction of food crops concerning?

a. Mutations during asexual reproduction decrease plant fitness.

b. Consumers do not trust identical-appearing produce.

c. Larger portions of the plant populations are susceptible to the same diseases.

d. Spores are not viable in an agricultural setting
See all solutions

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