Mitosis and Meiosis

This picture shows which process? 

• mitosis
• meiosis
• the cell cycle

What cellular process goes with sexual reproduction? 

• Mitosis 
• Fertilization 
• Meiosis 
• Budding 

As a result of fertilization which of the following normally occurs? 

• A gamete is created
• A single sperm and ovum combine their genetic material to create an offspring with the same number of chromosomes as the parents
• The final phase of spermatogenesis is begun

Unlike mitosis, meiosis in male mammals results in the formation of

• one haploid gamete
• three diploid gametes
• four diploid gametes
• four haploid gametes

When homologous chromosomes match up, they form a structure call a ___________.

• tetrad
• triad
• diploid
• gamete

Crossing over helps promote 

• male genotype
• genetic variation
• DNA replication
• mitosis

A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?

• 20
• 40
• 80
• 160

What is another reason we need meiosis?

• So the offspring has genes from both parents
• So the offspring has genes from one parent
• So the offspring has genes from neither parents
• So the offspring makes its own genes

Why do we need meiosis?

• To double the number of chromosomes going into sex cells
• To halve the number of chromosomes going into sex cells
• To triple the number of chromosomes going into sex cells
• To not change the number of chromosomes going into sex cells

A human zygote should have _____ chromosomes inside.

• 46
• 23
• 92
• 64