1. The diagram below represents early stages of embryo development.
Which term is best matched with letter A or B in the diagram
(1) A = mitosis
(2) B = fertilization
(3) A = cell division
(4) B = mitosis

2. Asexual Reproduction
Sexual Reproduction
Mitosis
Meiosis
Parts of Human Reproductive System
Human development (from sperm and Egg to YOU!)

3. Cells produced by mitosis are identical (same chromosomes, same materials). We call these identical cells clones.

4. Gametes - half the chromosomes so they can be fertilized

5. Normal number restored Normal number maintained
Meiosis
Fertilization
Zygote
Mitosis
Normal number restored
Normal number maintained
Half the normal number

6. Gametes are produced by meiosis. Human gametes are: Eggs and Sperm
Gametes are produced by meiosis. Human gametes are: Eggs and Sperm. Gametes are made in special organs called gonads. Human gonads are: Ovaries and Testis.

9. (cells begin to change)
Zygote
DEVELOPMENT
Differentiation
(cells begin to change)
Mitosis
begins
(cleavage)
Growth
(more cells)

10. Which row in the chart below best represents letters A – D?
The diagram below represents processes that occur within the human female reproductive system
Which row in the chart below best represents letters A – D?
Row A B C D
(1)
Meiosis
Fertilization
Birth
Differentiation
(2)
Growth
Zygote
Mitosis
(3)
(4)

14. The diagram below represents a microscopic
structure observed during mitosis.
The region indicated by
letter A is known as
(1) an enzyme (3) a gene
(2) a gamete (4) an amino acid

15. Chromosomes can be described as
(1) large molecules that have only one function
(2) folded chains of bonded glucose molecules
(3) reproductive cells composed of molecular bases
(4) coiled strands of genetic material

16. Which diagram best illustrates an event in sexual reproduction that would most directly lead to the formation of a human embryo?

17. The diagram represents processes involved in human reproduction.
Which letter in the diagram is an example of mitosis?
(1) A (3) C
(2) B (4) D

18. Quick and efficient Identical Slow, needs two Unique ADVANTAGE
DISADVANTAGE
Quick and efficient
Identical
ASEXUAL
Slow, needs two
Unique
SEXUAL

19. A C
Which sequence represents the path of sperm leaving the body?
(1) A → C → G (3) E → F → H
(2) A → C → B (4) D → F → G
Which organ could be altered to prevent sperm from leaving the body?
Which organ produces sperm cells and the sex hormone testosterone?

20. The diagram shows stages of human reproduction.
How are the cells produced by A & B different from the cells produced by D?
Which process restores the correct chromosome number of the organism?
Which process could occur in BOTH sexual and asexual reproducers?

21. Some organs in the human body are represented in the diagram.
A sudden change in the DNA of cells developing in which organ could be passed to future generations?
(1) A (3) C
(2) B (4) D

22. This sequence most closely resembles the process of (1) recombination
The sequence of events below occurs in the life cycle of a bacterium.
(A) The bacterium copies its single chromosome.
(B) The copies of the chromosome remain attached to each other.
(C) As the cell grows, the two copies of the chromosome separate.
(D) The cell is separated by a wall into equal halves.
(E) Each new cell has one copy of the chromosome.
This sequence most closely resembles the process of
(1) recombination
(2) mitotic cell division (mitosis)
(3) zygote formation
(4) meiotic cell division (meiosis)

23. Which term is best matched with letter A or B in the diagram
The diagram below represents what occurs when a sperm unites with an egg.
Which term is best matched with letter A or B in the diagram
(1) A = mitosis
(2) B = fertilization
(3) A = cell division
(4) B = mitosis

24. The diagram below represents early stages of embryo development.
Which term is best matched with letter A or B in the diagram
(1) A = mitosis
(2) B = fertilization
(3) A = cell division
(4) B = mitosis

25. The diagram below represents early stages of embryo development.
Which of these is the ZYGOTE?
Which of these are the GAMETES?
Which of these is beginning to DIFFERENTIATE into various body parts?

26. Meiosis and fertilization are important for the survival of many species because these two processes result in
All chromosomes
Half chromosomes
large numbers of gametes being saved for use at a later time
(2) increasingly complex multicellular organisms
(3) cloning of superior offspring
(4) maintaining the correct number of chromosomes in
offspring

27. When a starfish is cut in half, each half can grow into a complete starfish. This most closely resembles
(1) asexual reproduction in which a mutation has occurred
(2) sexual reproduction in which each half represents one
parent
(3) asexual reproduction of a single-celled organism
(4) sexual reproduction of a single-celled organism

28. 1 2 2 4 No
Yes
Yes No No
Yes No
Yes
Yes No
Yes No 46 23

29. What is the correct order for mitosis?B C D

30. What is the correct order for mitosis?B

31. Ovary C Place to grow Placenta
The human female reproductive system
is represented in the diagram.
Complete boxes 1 through 4 in the chart below using the information from the diagram.
Ovary C
Place to grow
Placenta

32. The process of meiosis formed
Some cells involved in the
process of reproduction are
represented in the diagram .
The process of meiosis formed
(1) cell 1, only (3) cell 3, only
(2) cells 1 and 2 (4) cells 2 and 3

33. species is due in part to the
The great variety of
possible gene
combinations in a
sexually reproducing
species is due in part to the
(1) sorting of genes as a result of gene replication
(2) pairing of genes as a result of mitosis
(3) pairing of genes as a result of differentiation
(4) sorting of genes as a result of meiosis
Mom’s genes + Dad’s genes = Baby’s

34. The diagram shows stages of human reproduction.
Fertilized egg (Zygote)
With ALL genetic information
The direct result of fertilization is represented at
(1) A (2) B (3) C (4) D

35. The diagram below represents a nucleus containing the normal chromosome number for a species.
Which diagram bests illustrates the normal formation of a cell that contains all of the genetic information needed for growth, development, and future reproduction of this species?

36. Which row in the chart below best represents letters A – D?
The diagram below represents processes that occur within the human female reproductive system
Which row in the chart below best represents letters A – D?
Row A B C D
(1)
Meiosis
Fertilization
Birth
Differentiation
(2)
Growth
Zygote
Mitosis
(3)
(4)

37. The development of an embryo is represented in the diagram below.
These changes in the form of the embryo are a direct result of
uncontrolled cell division and mutations
(2) differentiation and growth
(3) antibodies and antigens inherited from the father
(4) meiosis and fertilization

38. The diagram here represents
chromosomes in a zygote.
Which diagrams best illustrate the daughter cells that result from normal mitotic cell division of this zygote?

39. A pattern of reproduction and growth in
a one-celled organism is shown here.
Which statement best describes this pattern of reproduction?
(1) All genetic material comes from one parent.
(2) Only some of the genetic material comes from one parent.
(3) The size of the parent determines the amount of genetic material.
(4) The size of the parent determines the source of the genetic material.

40. Which letter is probably an example of mitosis?
The diagram represents processes involved in human reproduction.
Which letter is probably an example of mitosis?
(1) A (3) C
(2) B
(4) D