This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why is a large number of sperm needed to ensure that fertilization occurs? What will be an ideal ... (Read 37 times)

rayancarla1

  • Hero Member
  • *****
  • Posts: 571
on: Jul 21, 2018
Why is a large number of sperm needed to ensure that fertilization occurs?
 
  What will be an ideal response?

Question 2

Many species of plants and animals have now been genetically ___________________ __, which means that scientists have located where each gene is located on the chromosomes.
 
  Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Cheesycrackers

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 21, 2018
Answer to Question 1

Many sperm are needed for fertilization for two reasons. First, not all sperm are hardy enough to make the long trip to the oviduct where the egg is. Therefore, a large number of sperm are needed to ensure that some sperm reach the right destination. Second, even though only one sperm penetrates and fertilizes the egg, many sperm are needed to swarm around the egg and secrete an enzyme that loosens the cells surrounding the egg.

Answer to Question 2

mapped


rayancarla1

  • Member
  • Posts: 571
Reply 2 on: Jul 21, 2018
Excellent

shailee

  • Member
  • Posts: 392
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Polar bears feed upon a number of marine mammals. They are currently at the centre of international Polar bears feed upon a number of marine mammals. They are currently at the centre of international
Water amount needed to grow crops Water amount needed to grow crops
Anatomy of the Large Intestine (colon) Anatomy of the Large Intestine (colon)
The Globe Fishery packs shrimp that weigh more than 1.91 ounces each in packages marked large ... The Globe Fishery packs shrimp that weigh more than 1.91 ounces each in packages marked large ...
If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas? If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas?
The effect of disruptive selection on bristle number in Drosophila The effect of disruptive selection on bristle number in Drosophila
Video: Molecules, Membrane Permeability and Structure

For a complete list of videos, visit our video library