Fishy proteins Cod fish have two alleles for a protein that binds oxygen, called the Hb-1 and Hb-2 alleles. Fish expressing the Hb-1 allele are found in different environments than fish expressing the Hb-2 allele. Upon bringing both groups of fish into a lab, scientists found that the Hb-1 and Hb-2 proteins function differently when tested under two different temperature treatments, cold and warm temperature. The groups of fish were similar in size, age, and sex ratios. The figure below shows the findings from the scientist's research. high Oxygen binding performance Oxy pe low low O True Hb-1 cold O False Hb-2 cold Temperature (°C) warm Temperature (°C) Figure 1. The oxygen-binding performance of a protein depends on which allele codes for the protein (Hb-1 or Hb-2). The x-axis indicates the temperatures at which the protein was tested. The y-axis indicates the amount of oxygen bound to either the Hb-1 or Hb-2 protein. warm Use this information and your understanding of biology to answer questions 16-20. 16. In cold water, natural selection would favor heterozygotes that expressed Hb-1 and Hb-2 at the same time.

Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter8: Patterns Of Inheritance
Section: Chapter Questions
Problem 11RQ: The ABO blood groups in humans are expressed as the IA,IB and i alleles. The IAallele encodes the A...
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Fishy proteins
Cod fish have two alleles for a protein that binds oxygen, called the Hb-1 and Hb-2 alleles. Fish
expressing the Hb-1 allele are found in different environments than fish expressing the Hb-2 allele.
Upon bringing both groups of fish into a lab, scientists found that the Hb-1 and Hb-2 proteins
function differently when tested under two different temperature treatments, cold and warm
temperature. The groups of fish were similar in size, age, and sex ratios. The figure below shows
the findings from the scientist's research.
high
Oxygen binding
performance
ΣΧΟ
pe
low
low
O True
Hb-1
cold
O False
Hb-2
cold
Temperature (°C)
warm
Temperature (°C)
Figure 1. The oxygen-binding performance of a protein depends on which allele codes for
the protein (Hb-1 or Hb-2). The x-axis indicates the temperatures at which the protein was tested.
The y-axis indicates the amount of oxygen bound to either the Hb-1 or Hb-2 protein.
warm
Use this information and your understanding of biology to answer questions 16-20.
16. In cold water, natural selection would favor heterozygotes that expressed Hb-1 and Hb-2 at the same time.
Transcribed Image Text:Fishy proteins Cod fish have two alleles for a protein that binds oxygen, called the Hb-1 and Hb-2 alleles. Fish expressing the Hb-1 allele are found in different environments than fish expressing the Hb-2 allele. Upon bringing both groups of fish into a lab, scientists found that the Hb-1 and Hb-2 proteins function differently when tested under two different temperature treatments, cold and warm temperature. The groups of fish were similar in size, age, and sex ratios. The figure below shows the findings from the scientist's research. high Oxygen binding performance ΣΧΟ pe low low O True Hb-1 cold O False Hb-2 cold Temperature (°C) warm Temperature (°C) Figure 1. The oxygen-binding performance of a protein depends on which allele codes for the protein (Hb-1 or Hb-2). The x-axis indicates the temperatures at which the protein was tested. The y-axis indicates the amount of oxygen bound to either the Hb-1 or Hb-2 protein. warm Use this information and your understanding of biology to answer questions 16-20. 16. In cold water, natural selection would favor heterozygotes that expressed Hb-1 and Hb-2 at the same time.
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