To answer questions 4 and 5, you need to use data compiled from all the lab sections posted in the spreadsheets on Canvas. You will need TV, VC, FEV1 and sex.

4. Calculate the mean TV and VC for males and for females. Also report the number of each gender in your data.

 

In Missouri in 2004, a total of 127 HIV-related deaths occurred in males and 17 HIV-related deaths occurred in females. The estimated 2004 midyear population in Missouri was 2,810,852 males and 2,943,766 females.

Calculate the HIV-related death rate for males and for females.

What type of mortality rates did you calculate in step a?

Calculate the HIV-mortality rate ratio for males versus females.

Please explain, and no hand-written work please, please type answer

Sex-Linked Traits (traits located on the sex chromosomes—usually the X chromosome)

Follow the directions for the lab. Enter data you obtain for the following crosses and answer questions on this answer sheet. (NOTE: The traits used in this Module 3 Lab are sex-linked. Therefore, you CANNOT click the “ignore sex” button for these crosses. You need to see separate results for males and females to analyze data for sex-linked traits.)

Question: In this lab exercise, should you click the "ignore sex" button for the crosses?

1. a. Perform a monohybrid cross between a female fly with a tan body and a wild-type male fly. Show results for the F₁ offspring. (NOTE: You will use these F₁ flies in the next cross.)
ENTER DATA HERE:

Question: Are the phenotypes of the F₁ offspring what you would have predicted for this cross: why or why not?

Question: Each F₁ female received a tan allele from her mother and a wild allele from her father. Why do all of the F₁ females show the wild-type phenotype?

Question: Compare the number and type (X or Y) of sex chromosomes found in female and male flies.

Question: Compare the number of alleles present on the X and Y chromosomes.

Question: How can you tell that tan body is a sex-linked trait?

Question: How can you tell whether tan body is located on the X chromosome or the Y chromosome?

Question: If tan body was located on the Y-chromosome, what would be the phenotype of all the male F₁ offspring? Is this what you obtained for the cross above?

Question: If tan body was located on the Y-chromosome, could females even show the trait? (HINT: When analyzing the cross results, remember that Y-linked traits are passed down only from affected males to their sons. Females cannot display Y-linked traits since they do not have Y chromosomes. On the other hand, both males and females can inherit X-linked traits since they both have X chromosomes.)

PUNNETT SQUARE:

List the genotypes of the parent flies in this cross (HINT: You must use X and Y symbols):

List the gametes produced by each parent fly in this cross:

Show the Punnett Square for the above cross.

https://theconversation.com/the-y-chromosome-is-disappearing-so-what-will-happen-to-men-90125 Use this article to answer the questions below.

1.) Colorblindness and hemophilia are among several diseases that are known as sex-linked diseases. Explain why it is much more common for males to be colorblind than it is for females to be colorblind.