HOLES HUMAN ANATOMY AND PHYSIOLOGY
15th Edition
ISBN: 9781307233995
Author: SHIER
Publisher: MCG
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Chapter 22, Problem 54P
Summary Introduction
To determine:
The way in which the effectiveness of chemical contraceptives be increased.
Introduction:
Chemical contraceptives are chemicals that are used to prevent unwanted pregnancy. These include foams, creams, and jellies that are characterized by their spermicidal property. Chemical contraceptives are one of the birth control methods used to avoid unwanted pregnancy.
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Three of the many recessive mutations in Drosophila melanogaster that affect body color, wing shape, or bristle morphology are black (b) body versus grey in wild type, dumpy (dp), obliquely truncated wings versus long wings in the male, and hooked (hk) bristles versus not hooked in the wild type. From a cross of a dumpy female with a black and hooked male, all of the F1 were wild type for all three of the characters. The testcross of an F1 female with a dumpy, black, hooked male gave the following results:
Trait
Number of individuals
Wild type
169
Black
19
Black, hooked
301
Dumpy, hooked
21
Hooked, dumpy, black
172
Dumpy, black
6
Dumpy
305
Hooked
8
Determine the order of the genes and the mapping distance between genes.
Determine the coefficient of confidence for the portion of the chromosome involved in the cross. How much interference takes place in the cross?
Chapter 22 Solutions
HOLES HUMAN ANATOMY AND PHYSIOLOGY
Ch. 22 - Prob. 1PCh. 22 - Prob. 2PCh. 22 - Prob. 3PCh. 22 - Prob. 4PCh. 22 - Prob. 5PCh. 22 - Where in the testes are sperm cells produced?Ch. 22 - Which cells produce male sex hormones?Ch. 22 - Review the events of spermatogenesis.Ch. 22 - Explain the function of the sustentacular cells in...Ch. 22 - Prob. 10P
Ch. 22 - Describe the structure of the epididymis.Ch. 22 - Trace the path of the ductus deferns.Ch. 22 - What is the function of a seminal vesicle?Ch. 22 - Where is the prostate gland located?Ch. 22 - What is the function of the bulbourethral glands?Ch. 22 - Prob. 16PCh. 22 - Prob. 17PCh. 22 - Prob. 18PCh. 22 - Prob. 19PCh. 22 - Distinguish among orgasm, emission, and...Ch. 22 - Prob. 21PCh. 22 - Prob. 22PCh. 22 - Prob. 23PCh. 22 - Explain how the secretion of male sex hormones is...Ch. 22 - Prob. 25PCh. 22 - Prob. 26PCh. 22 - Prob. 27PCh. 22 - Prob. 28PCh. 22 - Prob. 29PCh. 22 - Prob. 30PCh. 22 - Prob. 31PCh. 22 - Prob. 32PCh. 22 - Prob. 33PCh. 22 - Prob. 34PCh. 22 - Prob. 35PCh. 22 - Prob. 36PCh. 22 - What is the male counterpart of the labia majora?...Ch. 22 - Prob. 38PCh. 22 - Prob. 39PCh. 22 - Prob. 40PCh. 22 - Prob. 41PCh. 22 - Prob. 42PCh. 22 - Prob. 43PCh. 22 -
44 What are the function of estrogens?
Ch. 22 - Prob. 45PCh. 22 - Trace the events of the female reproductive cycle.Ch. 22 - Prob. 47PCh. 22 - Prob. 48PCh. 22 - Prob. 49PCh. 22 - Prob. 50PCh. 22 - Prob. 51PCh. 22 - Prob. 52PCh. 22 - Describe two methods of contraception that use...Ch. 22 - Prob. 54PCh. 22 - Prob. 55PCh. 22 - Prob. 56PCh. 22 - Prob. 57PCh. 22 - Prob. 58PCh. 22 - Prob. 59PCh. 22 - What are some common symptoms of diseases...Ch. 22 - Prob. 1CACh. 22 - Prob. 2CACh. 22 - Prob. 3CACh. 22 - Prob. 4CACh. 22 - Prob. 5CACh. 22 - Prob. 6CACh. 22 - Explain the function of the sustentacular cells in...Ch. 22 - Prob. 8CACh. 22 - Describe a sperm cell. (p. 829)Ch. 22 - Prob. 10CACh. 22 - Prob. 11CACh. 22 - Describe the composition of semen. (p. 834)Ch. 22 - Prob. 13CACh. 22 - Prob. 14CACh. 22 - Prob. 15CACh. 22 - Distinguish between emission and ejaculation. (pp....Ch. 22 - Prob. 17CACh. 22 - Prob. 18CACh. 22 - Prob. 19CACh. 22 - Prob. 20CACh. 22 - Prob. 21CACh. 22 - Prob. 22CACh. 22 - Explain the regulation of testosterone secretion....Ch. 22 - Prob. 24CACh. 22 - Describe how the ovaries are held in position. (p....Ch. 22 - Prob. 26CACh. 22 - Prob. 27CACh. 22 - List the steps in oogenesis. (p. 841)Ch. 22 - Prob. 29CACh. 22 - Distinguish between a pre-antral and an antral...Ch. 22 - Prob. 31CACh. 22 - Prob. 32CACh. 22 - Prob. 33CACh. 22 - Prob. 34CACh. 22 - Prob. 35CACh. 22 - Prob. 36CACh. 22 - Prob. 37CACh. 22 - Prob. 38CACh. 22 - Prob. 39CACh. 22 - Prob. 40CACh. 22 - Prob. 41CACh. 22 - If left untreated, a complication of the diseases...Ch. 22 - Prob. 1IACh. 22 - Prob. 2IACh. 22 - Prob. 3IACh. 22 - Prob. 4IACh. 22 - As a male reaches adulthood, what will be the...Ch. 22 - Prob. 6IACh. 22 - Sometimes a sperm cell fertilizes a polar body...
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