Author Question: Light horses were once widely used to pull such heavy loads as wagons, plows, and other agricultural ... (Read 96 times)

jace

  • Hero Member
  • *****
  • Posts: 541
Light horses were once widely used to pull such heavy loads as wagons, plows, and other agricultural implements.
 
  Indicate whether the statement is true or false

Question 2

Why do chromosomes always come in pairs in higher-order animals?
 
  What will be an ideal response?



stillxalice

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

F

Answer to Question 2

In higher-order animals, chromosomes are always brought together in pairs and matched. The chromosomes separate as the cell divides, and each cell receives one of each chromosome from each pair. The new sperm cells contain only half the chromosomes of the original cell. When the sperm unites with the egg at conception, the original number of chromosomes is restored, because the sperm furnishes half the chromosomes and the egg furnishes the other half.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

For a complete list of videos, visit our video library