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Helping dyslexic students in and out of the classroom.

What if I have a student that is dyslexic...what are some things that I can do in the classroom, as a teacher to make things easier? Also, what are some tips that I can give the parents and what are some techniques that the school counselor can use when counseling the student?

Bio 100

1. There are three differences between the accomplishments of mitosis and the accomplishments of meiosis. One of these differences is fairly trivial: the other two are very important. What these three differences? For each of the differences, make sure that you clearly explain what it is that mitosis does and what it is that

Determining phenotypic ratio using test crosses

A true-breeding red snapdragon was crossed to a true-breeding white snapdragon. The F1 progeny were pink. When F1 x F1 matings were made, the following F2 progeny were observed. 1850 red 670 pink 831 white Total 3351 a. Using clearly defined genetic symbols, give the appropriate parental, F1 and F2 genotypes in o

Constructing pedigrees to analyze and determine inheritability and probability.

Gaucher disease is caused by a chronic enzyme deficiency that is more common among Ashkenazi Jews than in the general population. A Jewish man has a sister afflicted with the disease. His parents and grandparents, and other three siblings are not affected. Discussions with his relatives in his wife's family reveal that the disea

Mendelian Genetic problems

Could you please take a look at the attached problems that I have done which include Punnett square and genotype. I think I have done the problems correctly but I just need a second set eyes to see if there are any holes in my understanding on this topic.

Calculating phenotypic ratio in dihybrid crosses is achieved.

In garden peas, yellow seed color is dominant over green, and round seed shape dominant over wrinkled. What phenotypic ratio can be expected in F2 from a cross between pure yellow and round with green and wrinkled? What would be the ratio of yellow: green and round: wrinkled? Ideas are included.

Probability in genetics is the feature topic.

If two heterozygous brown rabbits are crossed, what would be the probability of the first three baby rabbits being brown, white, brown or white, brown, white? Explanations are included.

Understanding eukaryotic chromosome mapping techniques.

In haploid yeast, a cross between arg- ad- nic+ leu+ and arg+ ad+ nic- leu- produces haploid sexual spores, and 20 of these are isolated at random. The resulting cultures are tested on various media as shown below (in the table below, + means growth, while - means no growth). (a) What can you say about the linkage arrangement

Understanding recombination in bacteria.

A transformation experiment is performed with a donor strain that is resistant to four drugs: A, B, C, D. The recipient is sensitive to all four drugs. The treated recipient-cell population is divided up and plated on media containing various combinations of the drugs. The results are shown in the table below. Drug # co

Potential problems with transgenic mouse strains.

You have created 3 independent mouse strains carrying the same transgene by non-targeted transgenesis. All 3 strains have otherwise identical genetic backgrounds, yet all 3 have different phenotypes. What are potential explanations for this phenotypic variability?

Genetics -- map units

EDIT to the problem below: I just realized that the various numbers of offspring add up to 9900, not 10,000, which is the supposed total. So for problem #2, I randomly added 100 to my recombinant numbers and got the answer, 30.1, which turned out to be correct. But the same thing did not work for problem #1. Adding 100 to the

Double Cross-overs

Hi. Can you help me with the following genetics problem, please: "Consider a pair of homologous chromosomes heterozygous for three genes (e.g., ABC/abc) during prophase I of meiosis. Let the sister chromatids of one homolog be numbered 1 and 2 (ABC); and the sister chromatids of the other homolog be numbered 3 and 4 (abc).

Outlines of types of epistasis are included.

Mendelian Genetics

"a" is a dominant mutant allele of the A gene, and "b" is the recessive mutant allele of the B gene. To see the mutant phenotype, one requires either an "a" mutant phenotype or a "b" mutant phenotype (both mutations are not necessary). What would the F2 segregation ratio be (wild type to mutant) of the cross of an aabb mutant

Mendelian Genetics, Punnet squares

You cross an aa bb mutant plant with an AA BB wild type. What would the F2 segregation ratio be (wild type to mutant) if: a.) both mutations, a and b, were recessive? b.) both mutations were dominant? c.) one mutation was dominant and one recessive? (assume both mutations are required for the mutant phenotype) (assume t

Evolution Problems Involving Math are included.

Background The Hardy-Weinberg law states two things: 1. If no outside forces are acting on the population, then the allele frequency will remain constant from one generation to the next. 2. If no outside forces are acting on the population, then the genotype frequencies will be p^2, 2pq, and q^2. The converses of these sta

Somatic male cells are assessed.

If the somatic cells of a human male were found to contain one Barr body in their nucleus the most likely chromosome makeup of the individual would be: XO XX XYX XXY XXX

Probability genes

Assume that a trait is determined by a single pair of genes where one allele is dominant and the other is recessive. In a population, 30% of the females are pure dominant, 60% are hybrid, and 10% are pure recessive. If a pure recessive male mates with a random female and their first offspring has the dominant trait, what is th

Meiosis is depicted.

If a child more strongly resembles one parent's physical traits than the other parent's, the explantion could be due to chromosome movements during? A. anaphase II B. metaphase II C. prophase II D. anaphase I E. telophase I This study is discussed.

Genotype crosses are demonstrated.

What fraction of the time will the cross of Aa Bb Cc with Aa Bb Cc produce an offspring of genotype aa bb cc? A. 1/64 B. 1/32 C. 3/64 D. 1/16 E. 9/64