Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 22.4, Problem 3R
Summary Introduction
To review:
The reason behind the fact that narrow hybrid zones between Bombina bombina and B.variegata do not get wider over time.
Given:
The figure given below shows hybrid zone between B. bombina and B. variegata, which is shown in red.
Introduction:
B. bombina (fire-bellied toad) inhabits eastern Europe and B. variegata (yellow-bellied toad) inhabits western and southern Europe. The ranges of two species do overlaps in a narrow zone where these species hybridize forming a hybrid zone.
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Life: The Science of Biology
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- What factors can support the long-term stability of a hybrid zone if theparent species live in different environments?arrow_forward3. 3 I bbtal) Let's take a ślightly different look at the blue-eyed Mary Plants again. To remind you, the populations are dimorphic for dark blotches on the leaves --- some plants have blotches, and others don't. You have already determined earlier in the semester that Blotched is the dominant allele for this trait (use p for the dominant allele), and blotchless (no dark blotches on leaves) is the recessive allele for this trait (use g for the recessive allele). Leaves were sampled from each individual in a population of these plants, representing population in its entirety. The results are shown below: Remember our Hardy-Weinberg formulas: p² + 2pq +q² = 1 and p + q =1. Based solely on the phenotypic information given in the figure above, determine the following information (round to 2 decimal nlaces, please): :de d£h: q = 2pq- 2pqs What percentage of the plants are homozygous for the dominant allele?arrow_forwardWHAT IF If M. cardinalis individuals that had the M. lewisii yup allele wereplanted in an area that housed both monkey flower species, how might theproduction of hybrid offspring be affected?arrow_forward
- A large plant arose in a natural population. Qualitatively, it looked just the same as the others, except much larger. Is it more likely to be an allopolyploidarrow_forward(d) Scientists believe that the yellow fern arose from hybridization with another fern on the island. Create a diagram of this hybridization that tracks the origin of the chromosome number in the yellow fern.arrow_forwardIn Question 10p of Chapter 4, the genotype of parents of litters with the following phenotypes was determined as "Bbdd x bbDd." How was this phenotype determined based on the genotype: a. ) 4 brown, 4 black, 4 yellow and 4 cream 4 brown (4 B_D_) , 4 black (4 B_dd), 4 yellow (4 bbD_), 4 cream (4 bbdd) Hoping to get feedback in the shortest possible time.arrow_forward
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