« previous next »

Author Question: An expectant father asks the nurse, Which part of the mature sperm contains the male chromosomes? ... (Read 28 times)

tsand2

  • Hero Member
  • *****
  • Posts: 520
on: Jun 28, 2018
An expectant father asks the nurse, Which part of the mature sperm contains the male chromosomes? What is the best response by the nurse?
 
  a. X-bearing sperm
  b. The tail of the sperm
  c. The head of the sperm
  d. The middle portion of the sperm

Question 2

Two healthy parents who carry the same abnormal autosomal recessive gene have what percentage chance of having a child affected with the disorder caused by this gene? Record your answer as a whole number. _____
 
  Fill in the blank with correct word.


catron30

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jun 28, 2018
Answer to Question 1

ANS: C
The head of the sperm contains the male chromosomes that will join the chromosomes of the ovum. If an X-bearing sperm fertilizes the ovum, the baby will be female. The tail of the sperm helps propel the sperm toward the ovum. The middle portion of the sperm supplies energy for the tail's whiplike action.

Answer to Question 2

ANS:
25
Two healthy parents who carry the same abnormal autosomal recessive gene have a 25
chance of having a child affected with the disorder caused by this gene. Unaffected
parents are carriers of the abnormal autosomal recessive trait. Children of carriers have a
25 (1 in 4) chance of receiving both copies of the defective gene and thus having the
disorder.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

A vasectomy, showing how each vas deferens is tied off in two places and then a section is removed f A vasectomy, showing how each vas deferens is tied off in two places and then a section is removed f
Sexual swellings are one way for females to advertise their mating availability, thereby inducing ma Sexual swellings are one way for females to advertise their mating availability, thereby inducing ma
Gaussian Elimination (Part 3 of 3) Gaussian Elimination (Part 3 of 3)
Stages of mitosis. Only two pairs of chromosomes from a diploid (2n) Stages of mitosis. Only two pairs of chromosomes from a diploid (2n)
Comparison of the chromatin fibers with metaphase chromosomes Comparison of the chromatin fibers with metaphase chromosomes
Video: EpiPen Animation (Part 1)

For a complete list of videos, visit our video library