Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
6th Edition
ISBN: 9780134555430
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 8, Problem 10LTB
Summary Introduction
Introduction:
Sex-linked recessive disorders pass down in a family from X and Y sex chromosomes. In such disorders, if only one gene is abnormal, then the disease will not occur. The person carrying on one abnormal gene is the carrier of the disease. Mostly such disorders are X-linked traits.
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Consider the pedigree below for a recessive autosomal trait caused by allele t. The dominant wild-type allele is represented by T. What is the genotype of individual 5 in generation II?
A. TT or Tt
B. tt
C. Tt
D. Tt or tt
E. TT
The pedigree below represents which individuals in a given family have attached earlobes. Unattached earlobes are dominant over attached earlobes.Which of the following statements is true of the pedigree?
a
Individuals 8 and 9 are heterozygous for the trait.
b
Individuals 1, 2, 3, and 4 have attached earlobes.
c
Individuals 6, 7, and 10 are male.
d
Individuals 11 and 12 are identical twins
1-Pedigrees exhibiting consanguinity, show increased presence of _________ traits?
a-Dominant Traits
b-Recessive Traits
c-X-linked Traits
d-Disease Traits
Chapter 8 Solutions
Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
Ch. 8 - What is the relationship between genotype and...Ch. 8 - Add labels to the figure that follows, which...Ch. 8 - Prob. 3LTBCh. 8 - Prob. 4LTBCh. 8 - Prob. 5LTBCh. 8 - Scientists have recently developed a process by...Ch. 8 - What is the physical basis for the independent...Ch. 8 - Prob. 8LTBCh. 8 - Prob. 9LTBCh. 8 - Prob. 10LTB
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- a. Determine if the pedigree below can be for a trait that is X-linked traits. Write the genotype of each individual next to the symbol. b. Is it possible that this pedigree is for an X-linked recessive trait? c. What can you conclude about the children if both parents are affected with an X-linked recessive trait?arrow_forwardHow is this trait inherited? A. The trait is epistatic. B. The trait is X-linked. C. The trait is dominant. D. The trait is recessive.arrow_forwardWhich of the following cannot be true about the inheritance the trait depicted in the pedigree diagram below? A. It is recessive B. It is dominant C. It is on the X chromosome D. There is not enough information to determine the mechanism of inheritancearrow_forward
- Based on the following pedigree, a) what is the mode of inheritance and b) what is the genotype of the listed individuals: II-7, II-8, III-2, III-7arrow_forwardIn genetics looking at a pedigree, describe how a patteren ELIMINATES the possibility of a particular mode of inharitence?arrow_forwardFruit flies are very useful model organisms that have been used to study genetics. One mutant recessive trait in fruit flies is called "eyeless" because it causes flies to have no eyes. Cross an eyeless fly with a homozygous normal fly. a. Draw the Punnett square. b. What is the genotyoe ratio of the offspring? c. What is the phenotype ratio of the offspring? d. What genetic problem is this? (monohybrid, dihybrid or multiple allele)arrow_forward
- Why is there no trait (letter) on the y chromosome for males in this pedigree? A. Because the trait is X-linked (on the X chromosome) B. Because Ms. Premo made a mistake C. Because we never write anything on the y chromosomearrow_forwardIn the pedigree below what type of disease trait expression pattern is being observed? a Autosomal recessive b Autosomal dominant c Y-linked d X-linked recessive e X-linked dominantarrow_forwardWhat does a bell-shaped curve of a graph indicate? A. Mendelian inheritance pattern B. Incomplete dominance C. Codominance D. Continuous variationarrow_forward
- How are sex-linked recessive phenotypes passed between generations? options: A) From father to son to son. B) From father to daughter to son. C) From father to son to daughter. D) From father to daughter to daughter.arrow_forwardA cross between a horse homozygous for red hair and a horse homozygous for white hair results in offspring with the coat colour called roan. When you look at the fur of the roan offspring you see both red and white hairs. What type of inheritance best explains this? a) blending inheritance b)codominance c)incomplete codominance d)multiple allelesarrow_forwardThe pedigree below shows the inheritance of fur color in rabbits. What is the mode of inheritance for the black fur color trait? a) x-linked dominant b)autosomal recessive c)autosomal dominant d) x-linked recessivearrow_forward
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