How can the action of regulatory transcription factors be modulated (there are three ways)?

In guinea pigs, black coat color is dominant over white, short hair is dominant over long, and rough coat is dominant over smooth. Show the Punnett Square for a cross between a homozygous black, short-haired, rough coat guinea pig and a homozygous white, long-haired, smooth coat guinea pig. What do the offspring look like?

just what am i supposed to do here?

Design Your Own Experiment: Musculoskeletal Fatigue Experiment

Inventory Material sFull Lab Kit Box Rubber Band Rubber Ball Labware*Stopwatch/Timer Note: You must provide the materials listed in *red. EXPERIMENT

3: DESIGN YOUR OWN EXPERIMENT: MUSCLE FATIGUE

Design an experiment to test temperature-independent musculoskeletal fatigue using any of the materials provided. IMPORTANT: Students must submit personally designed experimental procedures to a teacher for approval prior to performing the experiment. When designing your experiment, create a hypothesis, identify dependent and independent variables, identify controls, include calculations where useful, record appropriate data, and report important data in an organized manner. After completing your ex-periment, write a brief post-lab report in which you address your hypothesis, procedure, data, calculations, data analysis, potential sources of error, conclusion, and additional questions or “next-steps”.

How do protists reproduce sexually and asexually. What are the stages?

During in class we did a simulation of the effect of natural selection in a population. After eliminating the individuals that died of, because of predation or disease, we calculated the frequencies of p and q. Then the number of individuals was restored to the initial population number of 50. Why was this crucial in our simulation?

Describe the fundamental characteristics of structural materials produced by animals and how these materials meet their functional requirements for tetrapod locomotion on land. Include in your answer: a. the definitions of (1) stress, (2) strain, (3) stiffness, (4) plastic, (5) elastic and (6) strength while comparing spider silk protein and synthetically produced nylon and rayon b. physical principles of terrestrial locomotion and the advantages conferred by various adaptations of legs and arrangements of tendons and muscles c. the differences in locomotory patterns of the cat, horse, giraffe, and human and how architecture contributes to the “spring in your step”

why do we need to test hypotheses in health-related or epidemiological research?

Consider a locus with two alleles - B and b. B is dominant, while b is recessive. There is no mutation. B has a selective advantage relative to b, so that the fitnesses of the three genotypes are BB = 1, Bb = 1, and bb = 1-s. In this case, s = 0.50, so that bb homozygotes have 50% fitness of heterozygotes and BB homozygotes. If the population has the following genotypic counts prior to selection of BB = 500, Bb = 250, and bb = 250, what is the expected change in the frequency of B after one generation with selection? Please give your answer to two decimal places.

Which of these tissues is not matched correctly with its function and/or structure?

A.nervous -- uses electrical signals for communication

B.bone -- solid connective tissue used for support and protection

C. cardiac -- found in the heart, voluntary muscle

D. transitional epithelium -- lines bladder and allows stretching

Is the correct answer D?

Describe the parts of the mesentery.

a) Explain the likely steps in pollen from the male cone travelling to, and then fertilising, an egg in the female cone scale

b) What are the similarities and differences between the female cone scale and the male cone?

c) Explain the main morphological features of the female cone scale and the male cone?

QUESTION 28

1. Which of the following is a presumptive test for the identification of Lancefield group A Streptococcus?

   	a.	Bacitracin susceptibility
   	b.	positive coagulase
   	c.	hippurate hydrolysis
   	d.	gram stain

1 points   

QUESTION 29

1. An organism grew at 37⁰C and 42⁰C from a stool culture oxidase, catalase, and Hippurate positive. This organism would be identified as:

   	a.	Campylobacter coli
   	b.	Campylobacter jejuni
   	c.	Streptococcus pneumoniae
   	d.	Aeromonas hydrophila

1 points   

QUESTION 30

1. A group of Canadian travelers were visiting the island of Kauai in Hawaii for a summer vacation. They noticed a cave in the middle of the island that contained a 10 feet deep pool of water. Much to their surprise, they were the only individuals enjoying this newly discovered swimming hole. A few days later, all swimmers became ill. Their physician believed they all had Weil disease. Which of the following organisms could cause this disease?

   	a.	Chlamydia trachomatis
   	b.	Treponema pallidum
   	c.	Borrelia burgdorferi
   	d.	Leptospira interrogans

Species X is diploid with a chromosome complement of AABBCCDD. A related species, Y, has chromosomes MMNNOOPPQQ. Please indicate how you obtain your answers.

a. How many chromosomes does Species X carry in each somatic cell?

b. What is the ploidy of normal somatic cells of Species X?

c. How many chromosomes does Species Y carry in each somatic cell?

d. What is the ploidy of normal somatic cells of Species Y?

e. How many chromosomes would an amphidiploid of Species X and Y hold in each cell?

f. What is the chromosome complement of the amphidiploid in the question above?

g. What types of chromosomal mutations do individual organisms with the following sets of chromosomes have? Please include the relevant species.

1. AAABBCCDD

2. MMNNOOOOPPQQ

3. AAABBBCCCDDD

4. AABBCDD

5. AABBCCDDMNOPQ

6. ABCDMMNNOOPPQQ