Questions
The yellow mutation is an X-linked recessive mutation in Drosophila, causing yellow body color. A yellow-bodied...

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...

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

3. Imagine you are talking with your friend while drinking water. All of a sudden, you...

3. Imagine you are talking with your friend while drinking water. All of a sudden, you start coughing uncontrollably because water has just gone down the “wrong pipe.” Explain why this happened. What structure prevents this? Explain the inside of the lungs (the branching systems) and why they do not like for liquid to be in the lungs. What happens when the lungs fill with liquid?

In: Biology

13.     Using the Heart Rate Reserve Method, calculate the target heart rate zone for the Tom:...

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

What does the folded domain structure of the actin momomer suggest about the evolution of the...

What does the folded domain structure of the actin momomer suggest about the evolution of the actin gene? please need a good explaination

In: Biology

The feature that defines and distinguishes ALL hominins from the apes is: the fact that we...

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. 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

Prepared slides of a hyacinth root tip specimen was also examined with a microscope. C The...

  1. Prepared slides of a hyacinth root tip specimen was also examined with a microscope. C The number of cells per zone and the total number of mitotic figures per zone (that is, cells that are in prophase, metaphase, anaphase, or telophase) were recorded. Calculate the length of each zone (in mm and to two decimal places) and the Mitotic Index (M.I.) to one decimal place. Your lab manual shows how to determine the length of each zone in the root tip. 4 marks

          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

  1. Comment on whether there is a difference in mitotic activity as you move through the zones (from Zone 1-4). Is there more activity in one zone compared to another? Why or why not? 4 marks

Answer: Click here to enter text.

In: Biology

Explain how water is filled in the kidney. Describe the differences in filtration when the urine...

Explain how water is filled in the kidney. Describe the differences in filtration when the urine is dilute, versus when the urine is concentrated. How does ADH impact this?

In: Biology

Glycolysis (and its sister pathway gluconeogenesis) and the citric acid cycle are often referred to as...

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...

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.

  • What is the chance their first child will have dimples? Explain your reasoning.

  • If their first child does not have dimples, what would the chance their second child has dimples? Again, explain your reasoning.

In: Biology

There are different kinds of isomers, describe them. Name FIVE functional groups and list a property...

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

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....

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...

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