Share
Explore BrainMass

Genetics

Clarify nature-nurture.

In life span development one of the major develpment issues is nature-nurture. What is this issue and why is it important to the study of human life span development?

What can cause a change in allele frequency

I need to understand the answer to the following multiple choice question. Which of the following causes changes in allele frequencies? a. genetic drift b. mutation c. natural selection d. gene flow from migration e. all of these

Hardy Weinberg principle

The Hardy-Weinberg principle is useful because: a. it explains the existence of variation in populations b. it proves that Mendel was correct for populations c. it describes most populations d. it explains the existence of a large number of species e. it identifies those factors that can change allele or genotype fre

This is a genetics problem dealing with humans with colorblindness and freckles

In human beings, the gene for red green colorblindness (r) is sex linked and recessive to its allele for normal vision (R), while the gene for freckles (F) is autosomal and dominant over its allele for nonfreckled (f). A nonfreckled, normal visioned woman whose father was freckled and colorblind, marries a freckled, colorblind

Nature versus nurture debate

There is a controversy about whether genetics or environment is more important in the development of our personalities. How does genetics impact behavior?

Monohybrid genetic cross to determine dominant trait

This is the genetic problem that I need to understand how to complete. Sand lizards in white sands new mexico: If for each species a lizard that was homozygous for the dark Mc1r allele had been crossed with a lizard that was homozygous for the light Mc1r allele the resulting F1 generation would have obtained the percentag

organizing effects or the activating effects of hormones

Can you help me with the following: Try this exercise: Hold out your right hand, place fingers together, and compare the length of your index (first) finger and ring (third) finger. The hormone "testosterone" is linked with masculine traits. The amount of testosterone exposed to in the womb affects finger length. The hi

Mendelian Inheritance Traits in Animals

The full problem is attached as a Word document, containing figures and pictures. The problem concerns a dominant and a recessive gene in lizards that affect the skin color of the lizard. The frequency of these genes in two different habitats is presented, and answers are given to several questions relating to the reasons

Inheritance of color blindness

A woman referred to as individual A marries a man, individual B. Both have normal color vision. They have 3 children. Child AB1 is a son with normal color vision. Child AB2 is also a son but he is red green colorblind. The third child, son AB3, is red green colorblind as well. AB1 son marries a woman, S, with normal vision.

In heritance of hemophilia

Hemophilia is caused by a mutation in a gene on the x chromosomes. Draw a pedigree of a family where one daughter and one son of the couple's children has hemophilia. The other two children are not hemophiliac. Describe how one might figure out if these two have a chance ( and what that chance is ) of passing hemophilia on to th

Determining blood type inheritance

The fathers blood group is AB. The potential sons blood group is B mother is blood group A. 1) Draw a mating/ cross diagram to show what the mothers geno type would be in respect to ABO blood group. 2) work out the probability that the child she conceived with the father would have a B blood group, please show f

View of technology advances on designer babies

As technology advances, the issue of "designer babies" and gene therapy seem to become a very real issue. In your opinion, do you think we should explore "modifying" genes? If so, in which cases? What do you think about the implications for altering genes for health reasons (e.g., a genetic disorder) vs. altering genes for co

Biological and Humanistic Approaches to Personality

I need help with analyzing the biological and humanistic approaches to personality. o Use Maslow's hierarchy of needs to discuss the extent to which growth needs influence personality formation. o Describe biological factors that influence the formation of personality. o Examine the relationship of biologica

Calculating Phenotypes/Genotypes in Rabbits

Please view the attached file for proper formatting. In rabbits, coat colour is controlled by multiple alleles of a gene. The coat colour of an ordinary wild type rabbit is called agouti, where each coat hair has bands of grey, yellow and black. The allele for agouti is represented by the capital letter C. Chinchilla rabb

Genetic problems regarding gene mapping of linked genes

Problem 1 A female mouse with yellow-mottled fur, eye-ear reduction and regular teeth was mated to a male mouse with dark gray fur, normal eye-ear size and irregular teeth. The F1 females were all wild type, that is, dark gray fur, normal eye-ear size and regular teeth. The F1 males had yellow-mottled fur, eye-ear reduction a

Ethics and Biology in DNA screening

Please explain the biological ethics with the following: According to insurance providers they believe their companies are unfairly having to insure people with high probability of inheriting debilitative diseases. My question.. Can certain types of DNA screening protect individuals from these discriminatory actions?

Clinical background to sickle cell anemia

We Select a clinical problem with a genetic component (i.e. Insulin Dependent Diabetes Mellitus Type I and HLA-DQ) in our area of interest. We can pick an existing paradigm or be creative and speculative. Just pick a gene or loci that has clinical impact for either diagnostic or prognostic reasons. infectious diseases and most

Genetic Testing in the work place

Need help in writing a paper regarding the topic covered below. Make your argument out in terms of utilitarian and eontological considerations The Genetic Testing Program at Burlington Northern Railway set the standard for what NOT to do. Railroad Agrees to Stop Gene-Testing Workers By Sarah Schafer. What is the one

Incomplete Dominance and Codominance: Genetics

Working on my lab report in which we studied human variation. My partner and I were each heterzygous Rr and Rr One of us was the male and one the female Each of us flipped the coin with R on one side and r on the other. the following are the results. Our biobaby is a girl Round face RR Curly Hair RR no widows pea

Parenting.

The role of parents in the lives of the developing child would seem to be pretty obvious. But whether parenting matters has been an issue of some controversy. In the provocative book the Nurture Assumption, Judith harris (1998) argues that what parents do does not make a difference in their children's behavior. Spank them, hug t

Genetically Modified Foods

You are attending a conference on sustainable development in low-income countries at Colorado Technical University. During your lunch break, you walk to the cafeteria and notice that one vendor is advertising "GMO-free" food. You purchase and enjoy a sandwich from this vendor. Later that day, you decide to do some research on ge

Hixokinas Activity in Adult and Larval Drosophila

Suppose you are working in a research lab investigating the expression of the enzyme hexokinase in Drosophila. Specifically, you are interested in expression patterns of this enzyme in Drosophila in the larval stage vs. the adult fly stage. After collecting data from both larvae and adult flies, your analyses indicate that the

Biology please provide brief answers

1) Explain the importance of a control group in scientific experiments. 2) Briefly discuss the differences between prokaryotic and eukaryotic cells. 5) Discuss how researchers decide that populations of organisms belong to the same biological species? 7) The origin of life on Earth would not have been possibl