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Chapter 11: Q. 11 (page 294)

The pea plants used in Mendel鈥檚 genetic inheritance studies were diploid, with 14 chromosomes in somatic cells. Assuming no crossing-over events occur, how many unique gametes could one pea plant produce?

a. 28

b. 128

c. 196

d. 16,384

Short Answer

Expert verified

The correct answer is option b

Step by step solution

01

Step 1. Introduction

Organisms can form 2nunique combinations of chromosomal compositions or gametes where n refers to number of homologous pairs.

02

Step 2. Explanation for the correct option

Option b is correct because organisms can form 2nunique combinations of chromosomal compositions where n refers to number of homologous pairs. Diploid organisms like pea carry two complete sets of homologous chromosomes. Pea makes 7 pairs of homologous chromosomes. So it forms 27 or 128 unique gametes.

03

Step 3. Explanation for the incorrect options

Option a is incorrect because pea forms 2n = 27 unique gametes. So 128 is correct instead of 28.

Option b is incorrect because pea forms 2n = 27 unique gametes. So 128 is correct instead of 196.

Option d is incorrect because pea forms 2n = 27 unique gametes. So 128 is correct instead of 16384.

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Most popular questions from this chapter

The part of meiosis that is similar to mitosis is ________.

a. meiosis I

b. anaphase I

c. meiosis II

d. interkinesis

What is a likely evolutionary advantage of sexual reproduction over asexual reproduction?

a. Sexual reproduction involves fewer steps.

b. There is a lower chance of using up the resources in a given environment.

c. Sexual reproduction results in variation in the offspring.

d. Sexual reproduction is more cost-effective.

Meiosis usually produces ________ daughter cells.

a. two haploid

b. two diploid

c. four haploid

d. four diploid

What structure is most important in forming the tetrads?

a. centromere

b. synaptonemal complex

c. chiasma

d. kinetochore

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?
See all solutions

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