Hi! This is a question on genetics and i was wondering if anyone would be so kind to help :D?

Question

Ok, it says here in a book that I was reading that chromosomes were made of DNA and so are genes. Does that mean that genes are a fragment of our chromosomes that are designed for a specific function?
Here's another one. There's such a thing called homolugous chromosomes. Does that mean that one comes from the mother and the other comes from the father because the gene loci are identical and the alleles are varied in some cases?
Is the allele, then, a form of gene that perform the same function but are an alternative form instead?

Answer 1

You are correct on every question.

Nice work!

Answer 2

Hi Princess. A Gene is the section of DNA that codes for the synthesis of a protein. Chromosomes are made up of large sections of DNA, which are interspersed with many genes. (Note: most of your DNA is so-called 'junk DNA' because it does not code for a protein, that is, it is not a gene.) So, yes, genes are the many sub-fractions of our chromosomes that are designed for the specific function of coding for proteins.

I am not familiar with the phrase 'homolugous chromosome' and cannot find it in my Dictionary of Genetics (2006). Humans have 23 PAIRS of chromosomes (46 total) in each cell. 23 from mom and 23 from dad. These 23 chromosomes are 'essentially' the same, except that each gene (allele) can be a variant (often what is called a single nucleotide polymorphism or SNP - pronounced 'snip'). For example, your mom and your dad each gave you a gene for making an enzyme such as collagenase. However, you may have different alleles (different forms) of the gene from each parent. These two different alleles may work essentially the same, or one may work better (or worse) than most forms of the allele. So, yes, an allele is a gene that performs the same function, but it may have a slight variation in its coding that changes the effectiveness of the protein it codes for.

Hope this is helpful to you. Best wishes and good luck.

Answer 3

Great questions! OK, one the first one yes, genes are fragments of chromosomes; each gene codes for a specific protein and there are many thousands (maybe tens of thousands) on a single chromosome.

Yes, homologous chromosomes come one from each parent--sometimes the alleles are identical and sometimes they are different (leading to homozygous and heterozygous gene pairs, respectively)

Yes, alleles are versions of the same gene which may or may not perform the same function. Sometimes an allele can produce a protein which does not function at all; sometimes it can function in a different manner; and sometimes it can function identically--it depends upon the specific change in the DNA.

Answer 4

hey princess

check this site out might help you understand genetics
http://www.preimplantationgenetictesting.com/Genetic_Glossary.htm

genes are found on chromosomes
genes for characteristics like skin colour, eye shape,
eye colour, height, muscle definition and everything else

half are donated by the sperm (dads) and half from the egg(mums)

they are dominant and recessive genes and only when two recessive get together can we have the physical charcteristic come out

every living thing has genes

homo means the same
hetero different
so if two genes are recessive they are homologous
if one iis dominant and the ther recessive then they are heterozygous

Answer 5

i've got been learning my Indian lineag for 4 yrs. I fairly have additionally been instructed by way of generations on my mothers element on the subject of the Indian ancestry. 4 years has been alongside journey to discover the info. My ancestor is lady and he or she became a million/2 Cherokee and Black ft. She got here from a Indian village and married a guy in residing in Jackson County, Ohio. various years back I met a woman right here in Alabama and he or she stated she became area Cherokee and Black ft. I see there is many comments listed right here yet once you have in no way do no longer in intensity learn then you does not be attentive to. Black ft at the instant are not the Montana Black Foot first. The Black ft the place stumbled directly to stay in Virginia and Georgia and is theory they branched off from the Cherokee. there became Cherokee interior the Southern area of Ohio. They called themselves Cherokee inspite of the undeniable fact that this is unknown in the event that they certainly the place. Our ancestors might then have self belief they are Cherokee and who be attentive to's they could have been precise. undergo in strategies the Cherokee Indians became the larges Indian u . s . and spread out by way of various states. The Indians did handle English names. i'm a descandant from the Wampamag Tribe in Massachusetts. My 8th great Grandfather Joseph Daggett b. 1634 in Dukes County, Married the daughter of (Thomas) Sachem Autumsquin Sissetom. Her call (Alice) Nahoma and her brother became (Samuel) Puttuspahquin. it fairly is written interior the history Books of Dukes count quantity, Massachusetts. The Indains might take English first names each and every so often.

Answer 6

I just wanted to say YAY! Someone who isn't posting twenty five multiple choice homework questions, but actually is interested and curious, and trying to figure things out. Kudos! Very refreshing.

Even better, you're trying to figure it out, AND you're clearly doing a good job of it. Woo-hoo! :) :) :)

Answer 7

yup thats all correct.