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DNA, Chromosomes and the Genomes

Chromosome count

For a non-human somatic cell that has 10 chromosomes indicate 1) number of chromosomes in G2 phase 2) number of chromatids in prophase 3) numberofchromosomes in anaphase 4) telomeres in G1 phase 5) number chromatids in one daughter cell

order of the loci in the chromosome

If a woman is heterozygous for three x-linked loci AaBbDd, She has seven sons with follow genotypes Two are X^ABd Y three are X^abDY one is X^ABD Y one is X^Abd Y 1) what is most likely combination of alleles on each the mothers chromosomes Answer: abD ABd 2) which is the sons are recombination, bw what genes is

Relationships among reproduction, heredity, and DNA.

Please Use the overview and other internet sources to answer the following. Part 1: Genetics - From Genes to Proteins, Mutations (Chapter 10) Overview: Genetic information in DNA is transcribed to RNA and then translated into the amino acid sequence of a Protein. A) Step 1 - Transcription: During the process of transcri

Klinefelter Syndrome Synopsis

How is Klinefelter Syndrome Inherited? Klinefelter syndrome is a term used to describe men who are born with an extra X chromosome in the majority of their cells. The cells of a normal, healthy person contain two copies of each of 23 chromosomes, for a total of 46 chromosomes per cell. Everyone has two sex chromosomes. Males ha

Explanation of transcription and translation

The student asked for help understanding how to take a DNA sequence, transcribe it to mRNA and then translate it to amino acids. Detailed information is given to explain the steps one needs to take in order to accomplish both tasks. The assignment posted also asked about mutations, so an explanation of mutations is also provided

Four Codons that Code for Glycine

There are four codons that code for Glycine. How may the choosing/selection of the more prevalent codon/codons used for Gly in algae growing in the Arctic differ from algea that grows in a hot spring?

Alleles Sequence Causing Blue Soybeans

Suppose you are working for a biotechnology company in the "New Plant Products" division. You wander into the greenhouse and come across a recently harvested bag of soybeans that are colored a neon blue. There are currently 5 soybean plants in the greenhouse, but the bag is not labeled as to which plant they were obtained from

DNA and inheritance

Discuss how the structure of DNA allows it to serve as the basis for inheritance.I read several topics but i'm not understanding clearly.

X-linked trait, autoradiograph

Mom Smith is heterozygous for an X-linked trait that can be recognized by a polymorphism when her DNA is cut with Hae III and probed with ExTend probe. The polymorphism is a 3.5kb band for normal and a 1.5kb band for disease. Please diagram what you predict the autoradiograph would look like for the above samples if th

Restriction enzyme fingerprinting is summarized.

BAC clones can also be ordered by restriction enzyme fingerprinting. A typical BAC may be around 200kb and EcoRI may cut on average roughly once every 4kb. Hence, a typical BAC EcoRI digest may contain 40-50 bands. The accuracy with which band sizes can be measured is very important for this type of mapping. It is likely bette

Genomic library

1. Imagine you have an ordered library of mouse genomic BAC clones (of roughly 200-250 kb each), named BAC-1, BAC-2 etc. ("1", "2" etc. in the table below). You also have a set of STS markers, named a, b, c, d etc. You are trying to order the clones by STS content mapping. The table below presents all of the BAC clones that i

Plasmid Transfer

You are trying to construct a plasmid to be transfected (introduced) into mouse tissue culture cells in order to find out whether a specific protein localizes to the nucleus or the cytoplasm. You have three purified plasmids as starting materials. The objective is to combine pieces of these plasmids to make one purified plasmid

ampicillin-resistant plasmid

You have a 4kb ampicillin-resistant plasmid with one BamHI site and a single HindIII site 1.5kb away from the BamHI site (shortest distance). you cut one microgram of the circular DNA (which we will assume has no nicks in it) with BamHI, and one microgram with HindIII. You heat-inactivate the enzymes (if you prefer you could

Impact of chromosomal aberration during Meiosis II

What is the impact of chromosomal aberration during Meiosis II? What would happen if any of the gametes produced were crossed with any of the other gametes produced. (i.e., crossing an abnormal gamete with a normal gamete)? Be specific.

Two strands of DNA molecule are radio-labeled, each strand can be uniquely identified. After three rounds of replication, how many new molecules of DNA are formed? How many DNA strands are radio-labeled? Are both radio-labeled strands in the same DNA molecule?

Two strands of DNA molecule are radio-labeled, each strand can be uniquely identified. After three rounds of replication, how many new molecules of DNA are formed? How many DNA strands are radio-labeled? Are both radio-labeled strands in the same DNA molecule?

Transcription in Eukaryotes

1. a. What unit is considered to compose the first order of chromatin folding in eukaryotes? b. Define the terms "heterochromatin" and "euchromatin." c. Why is transcription control necessary in eukaryotes? 2. a. List the three types of RNA polymerase enzyme, and for each, give the RNA molecule type it produces. b. What

Genetic Testing and Disease

See the attached file. DNA screening Many corporations have started presenting at home DNA health screening. A person has a cheek swab that isolates DNA and it then evaluated for patterns investigative of disposition to disease, by of which a lot of these disorders are still yet to be curable. -What are a few disadvantag

Chromosomal Variants

Certain trees of the same species are known to occur with several different chromosome numbers, even though they have similar characteristics. You have karyotyped some of these trees and found large differences in somatic chromosome numbers: 14, 28, 56, and 70. What would be the general genetic Term(s) given to these chromosomal

Muted sequence of DNA and products

Suppose that during DNA replication, two mutant DNA sequences are produced as shown:Original sequence: 3'-TACCCTTTAGTAGCCACT-5' 1.Mutated sequence: 3'-TACGCTTTAGTAGCCATT-5' 2.Mutated sequence: 3'-TAACCTTTACTAGGCACT-5' Question: For each of the two (mutated sequences) first transcribe the mR

Base sequence is determined.

Suppose that gene x has the sequence of DNA base 3'-TACCCTTTAGTAGCCACT-5' What would be the base sequence of RNA after transcription occcurs?

Genes and DNA

Suppose that gene X has the DNA base sequence 3'-TACCCTTTAGTAGCCACT-5'. QUESTION: What would be the base sequence of RNA after transcription occurs?

DNA as genetic material..

DNA was discarded as a possible candiate for the genetic material because: a. with only four types of nucleotides, it was a very simple, repetitive molecule that can not account for 20 different amino acids b. it had been shown that proteins were more important in transferring genetic information than nucleic acids c. prot

Down Syndrome DNA Examined

Is it possible for two people who have Down syndrome to give birth to a normal (without Down syndrome) child? If so, how would that be possible?

How a Protein is Made

Discuss/diagram the process from gene to protein. In other words, how do you build a protein based on a sequence of DNA? Thank you!

Ovary and testis removal

What changes, if any, would a male who has one testis removed experience? A female who has one ovary removed?