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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

If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism?

a. 8

b. 16

c. 32

d. 64

Hydras and jellyfish both live in a freshwater lake that is slowly being acidified by the runoff from a chemical plant built upstream. Which population is predicted to be better able to cope with the changing environment?

a. jellyfish

b. hydra

c. The populations will be equally able to cope.

d. Both populations will die

Meiosis usually produces ________ daughter cells.

a. two haploid

b. two diploid

c. four haploid

d. four diploid

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
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