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Genetics/DNA Problems

You are studying a human disease that is inherited in an autosomal dominant fashion. You recognize that the disease maps to chromosome 10, so you obtain four DNA probes that hybridize to different chromosome 10 regions. A family in which the disease appears presents itself to a medical genetics clinic. DNA is extracted from eac

Human chromosomes and formulas; abnormal chromosome number

I am having trouble writing the formulas. I know what each X and Y chromosome each possess but I don't know who to write a formula with that. 1. Write a formula for: (a) a male with Down syndrome (due to the presence of an extra chromosome 21) (b) a female with Turner syndrome (only one X chromosome) (c) a female with cr


Consider the following artificially created yeast Ty element: See attached file for full problem description. Upstream from the element has been placed the very strong PGAL promoter which is induced by galactose added to the media. The transcript traverses the whole element (large dashed arrow). Downstream from the normal

Construction of genetic map on the basis of transfer of genes during conjugation

Four Hfr stains of E. coli are known to transfer their genetic material during conjugation in different sequences. Given the time of entry of the markers into the F- recipient: A. Construct a genetic map that includes all of these markers. (12 points) B. Label the time distance between adjacent gene pairs. (11 points) C. I

Gene identification, RNA probe

Design (an) RNA probe(s) with 18-20 nucleotides that will allow you to identify by hybridization the gene for a protein with the following N-terminal amino acid sequence. H3N+- ala-pro-met-thr-trp-tyr-cys-met-asp-trp-ile-ala-gly-gly-pro-trp-phe-arg-lys-asn-thr-lys-. Explain your reasoning.

DNA sequencing and coding

See attached for full problem description You are given a genomic DNA from human with unknown function. You suspect this piece of DNA might code for a protein, but you are not sure which of the 6 frames are really coding. Which frame is most likely coding? Which is the most significant domain match? Does this prote

What is the human RefSeq sequence otholog of NM_007527?

Use reciprocal blast (bi-directional best hit) to find the human RefSeq sequence ortholog for mouse RefSeq sequence NM_007527. Note you should limit the database to RefSeq and select the right organism. You can obtain NM_007527 sequence by searching Nucleotide for NM_007527 from the the NCBI website.

Genetics and Gene Expression

See attached file for full problem description. Note: Please do not use other sources for your answer (Eg: Wikipedia) and please answer in full (Not simplified sentences), I need to be able to understand what you are explaining. When you carry out the working, please use punnett squares and diagrams. Question 2 is the most i

Biology Genetics Problem Set

See attached file for full problem description. 1. A man and woman marry who are both Rh+ and both heterozygous for the Rh factor. (Rh+ is dominant over Rh-.) A. Give the genotypes of the parents. (2 points) Man ______________ Woman ______________ B. What is the probability that their first child will be Rh-? (2 points

Gene Interaction in Corn

Problems are attached on a scan. They are numbered 1 through 3 and they are on the last page. If have attached the lab from which this problem came from.

Determine the frequency of allele A

50. Determine the frequency of allele A after one generation under the following conditions of migration: (a) P=0.6; Pm=0.1; m=0.2 (b) P=0.2; Pm=0.7; m=0.3 (c) P=0.1; Pm=0.2; m=0.1

Multiple choice questions

1. Which of the following genotype below shows a pure dominant genotype? A) Aa B) aa C) AA D) AB 2. Genes that are located at the same position on homologous chromosomes are called A) recessive B) dominant C) alleles D) albinism 5. Which of the following would represent the sex chromosomes of a normal female? A) XX

Using Probability to solve a genetic problems

Hi, I don't have a problem with the question itself but i don't understand how my textbook use probabilty in solving the problem. How many genetically different eggs could be formed by a women with the following genotypes? Aa bb CC DD Now it's obvious that one gamete will have (A b C D) and the other gamete will hav

4 genetics questions

1. Draw all possible chromosome configurations in Metaphase I with a dihybrid AaBb. 2. Do the same things as in question 1 for the genotype AaBbCc. 3. How many types of gametes would result from a dihybrid AaBb? What are they? 4. What portion of the zygotes will be a. AaBBCc? b. AABBCc? c. AaBbCc?


For the problems attached please show the symbols used in human pedigree analysis and/or Punnett Square if needed. Please also explain answers. Thank you! --- 1. A sex-linked recessive allele c produces a red-green colorblindness in humans. A normal woman whose father was colorblind carries a colorblind man. a. What


1. a. The ability to taste the chemical phenylthiocarbamide is an autosomal dominant phenotype, and the inability to taste it is recessive. If a taster woman with a nontaster father marries a taster man who in a previous marriage had a nontaster daughter, what is the probability that their first child will be (1) A nontaster


DIHYBRID CROSSES WITH INCOMPLETE DOMINANCE In cattle, polled is dominant to horned, and roan is the result of the heterozygous condition of the genes for red and white. What proportion of the offspring of a red, heterozygous polled bull and a roan, horned cow would be expected to be roan and horned? 25% SEX LINKAGE

DNA and Biodiversity

The development of DNA and genetic analysis has opened up a whole new branch of biological investigation: molecular phylogeny. DNA analysis has been used to reclassify a great number of organisms. These ultra-sensitive techniques have been able to reveal previously imperceptible relationships between both living and extinct orga

Expected phenotypic ratios

I need to be able to list the work and list the expected phenotypic ratios for the following crosses: A. If a red cow is bred with a white bull, all offspring are roan, which have red and white hairs intermixed on the hide. I know this is an example of co-dominance, but what are the results of roan x roan? B. If solid x sp

Biomimicry techniques.

There is an international conference that has been called to promote research in biomimicry that will have applications in genetic engineering and in biotechnology. The research and Development Corporation uses biomimicry techniques to look for antibiotics produced by fungi. You have been asked to present at conference. You

Biology 2

STUDY FIGURE 16-2. Then, in the space at the left, write the letter of the terms or phrase that correctly answers each question or best completes each statement. -The chromosome number of stage E is haploid is diploid is alike for all different species cannot be determined -The chromosome number o