Reproduction Lesson 3

Multiple Choice

HOW MANY CHROMOSOMES DO HUMAN GAMETES HAVE?

• 46

• 23

• 47

• 22

Multiple Choice

MEIOSIS IS NEEDED BECAUSE...

• IT ACTUALLY ISN'T, BUT CAN BE HELPFUL IN SOME ORGANISMS

• TO REDUCE THE CHROMOSOME NUMBER BY HALF

• SO THAT EVERY CELL IS EXACTLY IDENTICAL

• TO MAKE SURE EVERY HUMAN CELL HAS 92 CHROMOSOMES

Multiple Choice

MALE GAMETE IS KNOWN AS

• EGG

• SPERM

Multiple Choice

A FEMALE GAMETE IS KNOWN AS

• EGG

• SPERM

Multiple Choice

At the end of meiosis, how many complete/operational sex cells are created for each original cell?

• 2 for males; 2 for females

• 1 for males; 4 for females

• 4 for males; one for females

• 1 for males; 1 for females

Multiple Choice

FERTILZATION IS ...

• THE FUSION OF A HAPLOID EGG AND SPERM

• THE FUSION OF A DIPLOID EGG AND SPERM

• THE FUSION OF A HAPLOID EGG AND DIPLOID SPERM

• THE FUSION OF TWO EGGS

Multiple Choice

WHEN THE SPERM FERTILIZES THE EGG WHAT IS FORMED

• ZYGOTE

• EMBRYO

• FETUS

• FERTILIZATION

Multiple Choice

All sperm and egg cells are genetically identical.

• TRUE

• FALSE

Multiple Choice

THE GAMETES ARE CONSIDERED TO HAVE ONE HALF OF THE GENETIC INFO SO IT IS CALL

• DIPLOID (2N)

• DIPLOID (N)

• HAPLOID (2N)

• HAPLOID (N)

Multiple Choice

CROSSING OVER ALLOWS FOR WHAT TO HAPPEN?

• ALL CELLS TO STAY THE SAME

• GENETIC VARIATION

• REDUCTION OF CHROMOSOMES

• CHROMOSOME NUMBER TO INCREASE

Multiple Choice

THIS IMAGE SHOWS WHAT IS HAPPENING WITH THE CHROMOSOMES?

• NON- DISJUNCTION

• METAPHASE

• TELOPHASE

• CROSSING OVER

Multiple Choice

Which of the following does NOT happen during Telophase II?

• the nuclei reform

• each cell begins to split evenly in two

• the chromosomes duplicate

• the nuclei contain a haploid number of chromosomes

Multiple Select

Which of the following are CORRECT observations about the differences between MITOSIS and MEIOSIS? (Check all that apply.)

• Mitosis produces cells that identical to the parent cell.

• Meiosis produces cells that have half the number of chromosomes as the parent cell.

• All cells go through INTERPHASE as part of the cell cycle, whether it goes to mitosis or meiosis next.

• In both types of cell division, the chromosomes are only duplicated once.

• Only in Mitosis, do you see chromosomes pair up to form a tetrad.