The yellow mutation is an X-linked recessive mutation in Drosophila, causing yellow body color. A yellow-bodied female is crossed to a male with wild type body color to produce F1 progeny. The F1 female progeny and F1 male progeny are then crossed to each other to produce F2 progeny. Among the F2 females
A. all will be yellow body color.
B. 3/4 will be yellow body color.
C. 1/2 will be yellow body color.
D. 1/4 will be yellow body color.
E. none will be yellow body color.
In: Biology
4. Describe the gametophyte(s) and sporophyte of each of the following plants: moss (e.g. Polytrichum), liverwort (e.g. Marchantia), fern (e.g. Ceratopteris), gymnosperm (e.g. pine), and angiosperm (e.g. lily).
In: Biology
In: Biology
13. Using the Heart Rate Reserve Method, calculate the target heart rate zone for the Tom:
Tom: Age 20; Resting Heart Rate 60; Desired Target Heart Rate Zone: 70% to 85% of Maximum Heart Rate
Show your calculations to earn full credit.
Tom’s Maximum heart rate: (1pts) Show Calculation
Tom’s Heart Rate Reserve (Working Heart Rate): Show calculation (1pts)
Desired Target heart rate range: Show all calculations for full credit.
Low range 70% = _____ bpm (beats per minute)(2pts)
High range 85% = _____bpm(2pts)
If Tom counted his heart rate for 6 seconds, what would the number be for the above percentages? For example, a heart rate of 58 beats per minute would be the number 6 when counting for 6 seconds: (2)
70% = ______
85% = ______
14. Using the Heart Rate Reserve Method, calculate the target heart rate zone for the Sally:
Sally: Age 60; Resting Heart Rate 72; Desired Target Heart Rate Zone: 60% to 75% of Maximum Heart Rate.
Show your calculations to earn full credit. Failure to show calculation means a deduction of at least 1 point for each part of the question.
Sally’s Maximum heart rate: (1) Show Calculation
Sally’s Heart Rate Reserve (Working Heart Rate): Show calculation (1pts)
Sally’s Desired Target heart rate range: Show all calculations for full credit.
Low range 60% = _____ bpm (beats per minute)(2pts)
High range 75% = _____bpm(2pts)
In: Biology
In: Biology
The feature that defines and distinguishes ALL hominins from the apes is:
the fact that we walk on two feet.
Our lack of a tail
Our larger brains than the earlier hominins (like Austrolapithecus).
Our 3-D vision
In: Biology
2. The evolutionary history of plants is studied through 1) comparative studies of living plants and 2) examination of the fossils of extinct plants. What information has the study of fossils contributed to our understanding of plant evolution?
In: Biology
M.I. = number of mitotic figures x 100
total number of cells
|
Zone Number |
Total number of cells |
Total number of mitotic figures |
Distance of zone from the root tip (in mm) |
Mitotic Index |
|
1 |
51 |
3 |
0.43 |
5.88 |
|
2 |
62 |
20 |
0.86 |
32.26 |
|
3 |
58 |
39 |
1.29 |
67.24 |
|
4 |
41 |
16 |
1.72 |
39.02 |
Answer: Click here to enter text.
In: Biology
In: Biology
Glycolysis (and its sister pathway gluconeogenesis) and the citric acid cycle are often referred to as the Central metabolic Pathways. Identify at least 3 other metabolic in aerobic organisms (animal and or plant) that interact with these two central pathways. Briefly describe the connections and conditions that govern the flow of energy and shared intermediates
In: Biology
Tom [cheek dimples] and Cindy [not] are having a child, and are curious whether their child will have dimples in its cheeks. Dimples is thought to be an autosomal dominant trait.
In: Biology
There are different kinds of isomers, describe them.
Name FIVE functional groups and list a property of each one.
Why is carbon so important to life on earth?
In: Biology
an outline on Aging and How it is Related to the Cardiovascular System
In: Biology
A young woman in a suspected breast cancer family takes the BRCA1 and BRCA2 genetic tests. As a genetics counselor, you are asked to meet with her.
Prior to receiving the results she want to meet with you to see if you can give her more information as to what are the different cancer types she is at higher risk for if in fact she test positive for a BRCA-1 or BRCA-2 mutation? What would these be?
In: Biology
Introduction
Through a series of activities we will examine some of the
principles of genetics and techniques developed by geneticists to
predict mating outcomes and understand how genetic information is
passed from generation to generation.
Before coming to lab, refer to
your textbook or other references and write definitions for the
following words on a separate sheet of paper: chromosome, genes,
locus, allele, dominant allele, recessive allele, genotype,
phenotype, gamete, haploid, diploid, monohybrid, dihybrid,
homozygous, heterozygous, linked genes, autosomal chromosomes, sex
chromosomes, sex-linkage, and homologous chromosomes. Turn in these
definitions next week with your report sheet.
In: Biology