Question

Human genes often occupy a larger part of the chromosome compared to the homologous gene in...

Human genes often occupy a larger part of the chromosome compared to the homologous gene in yeast, yet the number of amino acids in more homologous human and yeast proteins are not very different. What structure explains this difference?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Large amounts of noncoding DNA are found within human genes compared to yeast. Such genes have a split structure in which segments of coding sequence (called exons) are separated by noncoding sequences (intervening sequences, or introns). The entire gene is transcribed to yield a long RNA molecule and the introns are then removed by splicing, so only exons are included in the mRNA. Although most introns have no known function, they account for a substantial fraction of DNA in the genomes of higher eukaryotes. Introns are not found in most genes of simple eukaryotes, such as yeasts.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Three Drosophila genes on the X chromosome occupy three different loci. The mutant versions of these...
Three Drosophila genes on the X chromosome occupy three different loci. The mutant versions of these genes are y for yellow body ct for cut wing ec for echinus (spiky eyes) When a cross is between female X, and male Y flies, the P and F1 have the following genotype + + +/y ct ec When the F1 is selfed to create the F2, most wild type genes remain linked on the same chromosome, as do the mutant genes on...
1. a. It’s estimated that each human somatic cell contains two copies (one on each homologous...
1. a. It’s estimated that each human somatic cell contains two copies (one on each homologous chromosome) of about 21,000 genes. If you took a close look at one of these (differentiated cells), would you expect all copies of these 21,000 genes to be actively making proteins at any one time?  If you say yes, explain why (generally) it would be advantageous for a cell to actively express all of its genes.  If you say no, explain why (generally) it would be...
Question 11 pts ________________ is a specific version of a gene on a homologous chromosome that...
Question 11 pts ________________ is a specific version of a gene on a homologous chromosome that has a corresponding version of a similar gene on a homologous chromosome. For example, hair color gene (ie. red from mom) will be on one homologous chromosome and a possibly different version of hair color gene (ie. black from dad) will be on the other corresponding homologous chromosome. chromosome allele chromatin genome Flag this Question Question 21 pts A ___________ is how you write...
1.A recent research paper demonstrated that cAMP bound to CAP acts more strongly on the lac...
1.A recent research paper demonstrated that cAMP bound to CAP acts more strongly on the lac operon than on the arabinose operon. Given what you know about catabolite regulation, and the lac operon, list the order of preference of utilisation of the three sugars; arabinose, lactose and glucose. 2.A 3000 bp region of the human genome encodes two genes. One of the genes encodes a protein of 700 amino acids and the other gene encodes a protein of 310 amino...
1. Error Rate in Protein Synthesis It is often said that protein complexes are made from...
1. Error Rate in Protein Synthesis It is often said that protein complexes are made from subunits (that is,individually synthesized proteins) rather than as one long protein because it is more likely to give a correct final structure. a. Assuming an error rate of 1/10,000, what fraction of bacterial ribosomes would be constituted correctly if the proteins were synthesized from one large protein versus assembled from individual proteins? For sake of calculation assume that the ribosome is composed of 50...
1. The gene regulation strategy referred to as attenuation is commonly, but not necessarily exclusively, associated...
1. The gene regulation strategy referred to as attenuation is commonly, but not necessarily exclusively, associated with operons/genes encoding: a.      catabolic enzymes such as ?-galactosidase b.     constitutively expressed products. c.       amino acid biosynthetic enzymes. d.     products whose expression is also regulated by cAMP. e.      transcription factors and other gene regulators. 2. A common example of a proto-oncogene product would NOT likely be: a.      a factor used in the proper translation of mRNAs. b.     a...
Fatty acids that are unsaturated have: Select one: a. an amino group b. a double bond...
Fatty acids that are unsaturated have: Select one: a. an amino group b. a double bond c. an excess of protons d. a carboxyl group The following structure is solid at room temp with the maximum amount of hydrogens attached and has no double bonds. What is it? Select one: a. An unsaturated fat b. A protein c. A solute d. A saturated fat Although there are a limited number of amino acids, many different types of proteins exist because...
The picture shown below shows variation among three individuals with respect to 4 nucleotides - AGAT....
The picture shown below shows variation among three individuals with respect to 4 nucleotides - AGAT. What do you think what type of variation is this? AGAT different repeat numbers in different individuals .png Minisatellite Single nucleotide polymorphism Short Tandem Repeats Which of the following statements is TRUE about DNA matching? Typical difference between the genomes of human beings and Chimpanzees is estimated to be 25 % Typical difference between the genomes of human beings and Drosophila is   estimated to...
12. If the DNA repair mechanisms fail to correct a defect in nucleotide sequencing, a permanent...
12. If the DNA repair mechanisms fail to correct a defect in nucleotide sequencing, a permanent change known as a __________________ may result. 13. As the enzyme helicase opens and “unzips” the two strands of DNA by breaking the hydrogen bonds, a Y-shaped ________________________ forms. a. Lagging strand b. Leading strand c. Okazaki fragment d. Replication fork 14. One large difference between transcription and translation between prokaryotes and eukaryotes is that, in prokaryotes: a. Translation occurs simultaneously with transcription b....
. Describe the hormonal changes that occur as a result of implantation, including production of human...
. Describe the hormonal changes that occur as a result of implantation, including production of human chorionic gonadotropin (HCG) to maintain the corpus luteum and increased production of progesterone by the corpus luteum Part C: Read these passages from the text and answer the questions that follow. The only obvious difference between boys and girls at birth is their reproductive organs. However, even the reproductive organs start out the same in both sexes. In the first several weeks after fertilization,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT