BSC 1005 PKG-W/MOD. MAST. ACCESS >CI<
17th Edition
ISBN: 9781269683364
Author: Reece
Publisher: Pearson Custom Publishing
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Chapter 14, Problem 17TYK
Cultivated American cotton plants have a total of 52 chromosomes (2n = 52). In each cell, there are 13 pairs of large chromosomes and 13 pairs of smaller chromosomes. Old World cotton plants have 26 chromosomes (2n = 26), all large. Wild American cotton plants have 26 chromosomes, all small. Propose a testable hypothesis to explain how cultivated American cotton probably originated.
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The table shows three related species of potato, and the number of chromosomes each species carries in its somatic cells. S. avilesii is
diploid. S. tuberosum is the widely cultivated species. Potatoes propagate by asexual reproduction and do not depend only on
gametes for reproduction.
Species
Number of chromosomes in somatic cells
S. tuberosum is likely
to be a larger, more
vigorous plant than S.
avilesii.
Classify each statement about these potato species as true or false.
Gametes produced
by S. microdontum
contain 18
chromosomes.
S. microdontum is
aneuploid.
S. microdontum is a
triploid with 3x
chromosomes.
Solanum avilesii
True
24
The basic
chromosome number
(x) for these species
is 6.
S. tuberosum is a
tetraploid with 4x
chromosomes.
Solanum
microdontum
36
The basic
chromosome number
(x) for these species
is 12.
S. microdontum could
have arisen only from
a cross between S.
avilesii and S.
tuberosum.
False
Solanum
tuberosum
48
S. microdontum could
have arisen from a
cross between…
Explanation is greatly appreciated as to identify the chromosomes within the picture.
You perform a cross between two plants, one MmPp and one mmpp, and obtain offspring with the following phenotypes: 42 MP; 374 Mp; 367 mP; 27 mp. What can you conclude from these data?
Group of answer choices
The M and P genes are on different chromosomes
The recombinant progeny are mP and Mp
The M and P genes are far apart on the same chromosome
The recombinant progeny are MP and mp
Chapter 14 Solutions
BSC 1005 PKG-W/MOD. MAST. ACCESS >CI<
Ch. 14 - Name the two types of speciation represented by...Ch. 14 - Fill in the blanks in the following concept map.Ch. 14 - Which concept of species would be most useful to a...Ch. 14 - Prob. 4TYKCh. 14 - Bird guides once listed the myrtle warbler and...Ch. 14 - Which of the following is an example of a...Ch. 14 - Biologists have found more than 500 species of...Ch. 14 - A new plant species C, which formed from...Ch. 14 - A horse (2n = 64) and a donkey (2n = 62) can mate...Ch. 14 - What prevents horses and donkeys from hybridizing...
Ch. 14 - When hybrids produced in a hybrid zone can breed...Ch. 14 - Which of the following factors would not...Ch. 14 - Explain how each of the following makes it...Ch. 14 - Explain why allopatric speciation would be less...Ch. 14 - What does the term punctuated equilibria describe?Ch. 14 - Can factors that cause sympatric speciation also...Ch. 14 - Cultivated American cotton plants have a total of...Ch. 14 - Prob. 18TYKCh. 14 - Prob. 19TYK
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