CAMPBELL BIOLOGY SFC PACKAGE >CUSTOM<
10th Edition
ISBN: 9781269941860
Author: Campbell
Publisher: PEARSON C
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Chapter 15, Problem 13TYU
WRITE ABOUT A THEME: INFORMATION The continuity of life is based on heritable Information in the form of DNA. In a short essay (100-150 words), relate the structure and behavior of chromosomes to inheritance in both asexually and sexually reproducing species.
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The chromosomes drawn below are found in a human skin cell. The lines represent the chromosomes themselves. The letters indicate the location of a particular version of a gene.
a) T/F An individual’s offspring are more likely to inherit a D1 and R together than a D1 and T9 together.
b) T/F About 50% of the egg cells from this individual will have both T9 and BA5.
c) T/F Because r is recessive, the frequency at which the r version of the gene occurs in a population is lower than the frequency at which the R version occurs in the population.
d) T/F If the protein produced by the BA gene is involved in the formation of ovaries, then the BA gene is likely located on a sex chromosome.
e) T/F Because the genes shown here are found in skin cells, these genes code for proteins required for skin cell function.
Discuss whether or not the X and Y chromosomes are really distinct linkage groups?Hint(X and Y chromosomes have a few genes in common. These genes are inherited in a pseudoautosomalpattern.)
Homologous chromosomes can be either monads or dyads. Explain.
How is it possible to have genetically identical twins that don’t look exactly alike?
Chapter 15 Solutions
CAMPBELL BIOLOGY SFC PACKAGE >CUSTOM<
Ch. 15.1 - Which one of Mendel's laws describes the...Ch. 15.1 - MAKE CONNECTIONS Review the description of...Ch. 15.1 - WHAT IF? Propose a possible reason that the first...Ch. 15.2 - A white-eyed female Drosophila is mated with a...Ch. 15.2 - Neither Tim nor Rhoda has Duchenne muscular...Ch. 15.2 - MAKE CONNECTIONS Consider what you learned about...Ch. 15.3 - When two genes are located on the same chromosome,...Ch. 15.3 - VISUAL SKILLS For each type of offspring of the...Ch. 15.3 - Prob. 3CCCh. 15.4 - Prob. 1CC
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.5 - Gene dosagethe number of copies of a gene that are...Ch. 15.5 - Reciprocal crosses between two primrose varieties,...Ch. 15.5 - WHAT IF? Mitochondrial genes are critical to the...Ch. 15 - What characteristic of the sex chromosomes allowed...Ch. 15 - Why are males affected by X-Iinked disorders much...Ch. 15 - Why are specific alleles of two distant genes more...Ch. 15 - Prob. 15.4CRCh. 15 - Explain how genomic imprinting and inheritance of...Ch. 15 - A man with hemophilia (a recessive, sex-linked...Ch. 15 - Pseudohypertrophic muscular dystrophy is an...Ch. 15 - A wild-type fruit fly (heterozygous for gray body...Ch. 15 - A planet is inhabited by creatures that reproduce...Ch. 15 - Using the information from problem 4, scientists...Ch. 15 - A wild-type fruit fly (heterozygous for gray body...Ch. 15 - Assume that genes, A and B are on the same...Ch. 15 - Two genes of a flower, one Controlling blue (B)...Ch. 15 - You design Drosophila crosses to provide...Ch. 15 - Banana plants, which are triploid, are seedless...Ch. 15 - EVOLUTION CONNECTION Crossing over is thought to...Ch. 15 - SCIENTIFIC INQUIRY DRAW IT Assume you are mapping...Ch. 15 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 15 - SYNTHESIZE YOUR KNOWLEDGE Butter flies have an X-Y...
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- A. Please explain the key differences between each of the following pairs of terms. (i) Haploid vs. monoploid (ii) Pericentric inversion vs. paracentric inversion (Please include a simple diagram, along with your written explanation.) (iii) Homologous chromosomes vs. homeologous chromosomes:arrow_forwardSUBJECT GENETICS Topic: Chromosomal Abberations Below are aberrations due to changes in chromosomal structure and number. Identify of the following whether it is due to structure or number?a.Down’s syndrome b.Cri-du-chat syndrome c. Patau’ syndrome Seedless watermelon, good quality of harvest of coffee, cotton and some fruits , due to polyploidy. What is polyploidy?arrow_forwardConsider a hypothetical DIPLOID organism with ONE PAIR of homologous chromosomes. How many DNA molecules are there per nucleus in a somatic cell in G1? 4 8 2 1 Picture 1 shows Bob’s chromosome #18 pair. Picture 2 shows Sue’s chromosome #18 pair. Bob and Sue have a stillborn son with three copies of chromosome #18 that look like picture 3. In which parent did the chromosome separation problem occur? Bob Sue Both parents You need additional information to determine which parent. Starting with a population of genetically identical mice, you discover two new independent mutant strains in which all of the animals have epileptic seizures. In both strains, you know that the epileptic seizures are due to a single DNA mutation. You cross a mutant mouse from one strain to a mutant mouse from the second strain and find that none of their many offspring undergo spontaneous seizures. From…arrow_forward
- The horse (Equus caballus) has 32 pairs of chromosomes, whereas the donkey (Equus asinus) has 31 pairs of chromosomes. How many total chromosomes would be expected in the somatic tissue of a mule, which is a hybrid of these two animals? Hint: a hybrid donkey is created by the union of a normal gamete from a horse and a normal gamete from a donkey. Group of answer choices 31.5 62 126 none of these is correct 63arrow_forwardExplain the terms haploid, diploid, and polyploid. Why is polyploidy so much more common in plants than in animals? Give examples of polyploid animals. Polyploid plants may occur naturally or they may be created intentionally by agricultural scientists. List four examples of polyploid commercial crops and explain why they are superior to their diploid ancestors.arrow_forwardSome people compare a homologous pair of chromosomes to a pair of shoes. Explain the similarity. How would you extend the analogy to the sex chromosomes for females and for males?arrow_forward
- SCIENTIFIC INQUIRY The diagram in question 6 represents just a few of the chromosomes of a meiotic cell in a certain person. Assume that the freckles gene is located at the locus marked F, and the hair-color gene is located at the locus marked H, both on the long chromosome. The individual from whom this cell was taken has inherited different alleles for each gene (“freckles” and “black hair” from one parent, and “no freckles” and “blond hair” from the other). Predict allele combinations in the gametes resulting from this meiotic event. (It will help if you draw out the rest of meiosis and label the alleles by name.) List other possible combinations of these alleles in this individual’s gametes. Question is also in the picture.arrow_forwardWhat would be the effect on genetic diversity if homologous chromosomes did not randomly separate into the daughter cells during meiosis?arrow_forwardFill in the numbers: Humans = ____,_____. Fruit flies, who have 4 chromosomes and are diploid = _____,_______.arrow_forward
- A black female cat (XBXB) and an orange male cat (X0Y) weremated to each other and produced a male cat that was calico.Which sex chromosomes did this male offspring inherit from itsmother and father? Remember that the presence of the Y chromosome determines maleness in mammalsarrow_forwardDiscuss the concepts of homologous chromosomes, diploidy, and haploidy. What characteristics do two homologous chromosomes share?arrow_forwardmagine that you are mapping out genes on chromosomes similar to how Morgan did with fruit flies. You find gene A recombines with gene B 25% of the time, gene A recombines with gene C 12% of the time, and gene B and C recombine 17% of the time. What order do these genes lie on a chromosome? CAB CBA BCA ABCarrow_forward
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