Which of the following best describes a pair of homologous chromosomes? a- A pair of chromosomes that have the same alleles of the same genes arranged in the same order b- A pair of chromosomes that have the same genes, but arranged in a different order, and with potentially different alleles of some of the genes c- A pair of chromosomes that have different alleles of the same genes arranged in different order d- A pair of chromosomes that have the same genes in the same order, but possibly with different alleles of some of the genes

Which of the following best describes a pair of homologous chromosomes? a- A pair of chromosomes that have the same alleles of the same genes arranged in the same order b- A pair of chromosomes that have the same genes, but arranged in a different order, and with potentially different alleles of some of the genes c- A pair of chromosomes that have different alleles of the same genes arranged in different order d- A pair of chromosomes that have the same genes in the same order, but possibly with different alleles of some of the genes

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter19: Introduction To Genetics

Section: Chapter Questions

Problem 7SQ: Which statement best fits the principle of segregation? a. Units of heredity are transmitted to...

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Which of the following is unable to form a linkage group? O genes that are not located on the same chromosome O genes that are located on the same chromosome O genes that are more than 17cM apart from one another
Which statement about the relationship between genetic map and physical map is FALSE? The correlation between Genetic map distance and Physical map distance is not absolute. Roughly speaking, for two genes on the same chromosome, the bigger their genetic map distance is, the bigger the physical map distance is. The genetic map is in a way a distorted picture of the physical map. 1 genetic map unit (1cM) always correlates with a certain distance on the physical chromosome.
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
CONSTRUCT A GENETIC MAP OF A CHROMOSOME FROM THE FOLLOWING RECOMBINATION FREQUENCIES BETWEEN INDIVIDUAL PAIRS OF GENES: R-C, 10; C-P, 12; P-R, 3; S-C, 16; S-R, 8. WHAT IS THE GENE ORDER? s-r-p-c s-p-c-r c-r-p-s c-s-p-r
Which of the following describes a linkage group? All the genes on a chromosome An individual who has two identical alleles at the same locus on homologous chromosomes An individual who is heterozygous for a given gene A particular location on a chromosome
Which one of the following entries does not describe the relationship between homologous chromosomes? Contain the same genes, but may be different alleles Contain identical alleles of the same genes Inherit one homologous chromosome from mother, inherit one homologous chromosome from father. Very similar at the DNA sequence level
Which of the following scenarios would erroneously lead you to believe two genes reside on different chromosomes when they in fact are on the same chromosome? a mating between consanguineous individuals too large a sample size the genes are very close together on the chromosome, such that there is never a crossover between them the genes are very far apart on the same chromosome, such that there is always a crossover between them 5. the genes are very far apart on the same chromosome, such that there is never a crossover between them
Use the following diagram and information to help you answer the next question. Each line represents a chromosome. The colours represent a homologous pair. The circle represents the centromere. The letters represent the alleles of each gene found on the chromosomes. The "X" represents the process of crossing over. Crossing over is more likely to occur between genes that are farther away from the centromere, and from other genes. For the three genes shown, identify the row that shows the alleles that would be found on each of the four chromosomes if a crossover occurs. Select one: a. Gamete 1 Gamete 2 Gamete 3 Gamete 4 AbC AbC aBc aBc b. Gamete 1 Gamete 2 Gamete 3 Gamete 4 Abc Abc aBC aBC c. Gamete 1 Gamete 2 Gamete 3 Gamete 4 Abc ABc abC aBC d. Gamete 1 Gamete 2 Gamete 3 Gamete 4 Abc AbC aBc aBC
What is the difference between Genetic Distance and Physical Distance? Use pictorial and tabular references to make your answer clear. Kindly also give an example of genetic and physical map like Drosophila, Yeast or Maize of any chromosome.
Pick the statement about chromosome structure that is FALSE. Gene duplications provide an explanation for the origin of gene families. A position effect occurs when a gene’s expression is altered by virtue of a change in its chromosomal position. Inversions decrease the frequency of recombinate gametes. A paracentric inversion is one whose break points include the centromere. Genes that function abnormally when present in only one copy are called haploinsufficient.
How can a single gene cause different diseases? Locus heterogeneity Pleiotropy Epistatis Clinical heterogenetiy ASAPPP
Homologous Chromosomes We have discussed homologous chromosomes before. This idea is essential to the understanding of genetics, so we will review it again. Information • Very simple organisms have only one set of chromosomes and they are haploid. ► More complex organisms have two sets of chromosomes and are diploid. • Haploid organisms have one of each kind of chromosome and one of every kind of gene. Diploid organisms have two of each kind of chromosome and two of kind of gene. every The two chromosomes of each kind in a diploid organism are called homologous chromosomes because they are carrying the same kind of traits (genes). Homo means "same." ► A human has 23 different kinds of chromosomes that are given numbers from 1 to 23. Because we are diploid organisms we have two of each of the different kinds. So, we have 46 chromosomes in all, made up of 23 homologous pairs. ? QUESTION 1. How many sets of DNA molecules or chromosomes does a diploid organism have? 2. How many sets of DNA…