Reproduction and Zygote Formation Quiz

Models A and B below illustrate two different methods of reproduction. Which statement best describes the offspring that result from these methods?

• Both models A and B produce offspring that have fewer chromosomes than the parent cells.

• Both models A and B result in offspring that have more chromosomes than the parent cells.

• Model A produces offspring with genetic information different from the parent. Model B produces offspring that are genetically identical to the parents.

• Model A produces offspring with identical genetic information to the parent cells. Model B produces offspring that are genetically different from the parent cells.

Which two processes are directly required for a human zygote to be produced?

• mitosis and fertilization

• meiosis and fertilization

• mitosis and differentiation

• meiosis and differentiation

The diagram below represents the human female reproductive system. Which row in the chart correctly describes the normal function of two of the labeled structures?

• eggs are produced in A, and the fetus develops in B

• meiosis occurs in A, and development occurs in D

• fertilization occurs in B, and the placenta forms in C

• fertilization occurs in D, and the fetus develops in C

Identify the pattern of chromosomes possible in the tadpole offspring from these parent frogs.

• The pattern of chromosomes possible in the tadpole offspring from these parent frogs is a mix of the chromosomes from each parent, resulting in various combinations.
• The tadpole offspring will have chromosomes from only one parent frog
• The tadpole offspring will have chromosomes from unrelated species
• The tadpole offspring will have identical chromosomes to one of the parent frogs

The graph below represents the interactions of two female reproductive hormones. Based on the graph, which statement is correct regarding the interaction of the levels of estrogen and progesterone?

• When the amounts of estrogen and progesterone are at the same level, an egg begins to develop in the ovary.

• When an egg is released from the ovary, the level of estrogen is higher than the level of progesterone.

• The level of progesterone controls the cycle since it is always higher than the level of estrogen.

• After an egg is released from the ovary, the level of estrogen keeps increasing, causing the level of progesterone to decrease.

The process of meiotic division in human males is represented below. This process produces four sperm cells, each with:

• all of the genetic information contained in the diploid germ cell

• one-quarter of the genetic information contained in the diploid germ cell

• twice the genetic information found in the diploid germ cell

• one-half of the genetic information found in the diploid germ cell

Some organisms have variations. Two sources of these variations are:

• mitotic and meiotic cell division

• mutations and recombination

• cloning and sexual reproduction

• natural selection and evolution

Which statement about the functioning of the human reproductive system is correct?

• The zygote helps the mother provide milk to the fetus before it is born.

• Testes produce unfertilized eggs and release them so that they can be fertilized by sperm.

• Ovaries are where male gametes undergo meiosis to reduce their chromosome number.

• The uterus is where the fetus develops internally until birth.

Each of the cells present in a woman contains a complete set of chromosomes. The only exceptions are her

• skin cells

• nerve cells

• egg cells

• lung cells

Which row in the chart below contains the correct sequence of events involved in the formation of a human embryo?

• meiosis, differentiation, fertilization, mitosis

• differentiation, meiosis, mitosis, fertilization

• fertilization, mitosis, meiosis, differentiation

• meiosis, fertilization, mitosis, differentiation