Test for Reproduction Study!!!!!!!!

If an organism’s diploid number is 12, its haploid number is

Unlike mitosis, meiosis results in the formation of two genetically identical diploid cells. four genetically different haploid cells. four genetically identical haploid cells. two genetically different diploid cells.

What is shown here? independent assortment crossing-over anaphase I of meiosis incomplete dominance

Linked genes are never separated. assort independently. are on the same chromosome. are always recessive.

Human females produce egg cells that have one X chromosome. one X or one Y chromosome. two X chromosomes. one X and one Y chromosome.

The testes and the ovaries do not begin making active reproductive cells until birth. gastrulation. fertilization. puberty.

Puberty usually begins between the ages of 5 and and and and 25.

One menstrual cycle usually lasts about a day. month. week. year.

Where does fertilization typically occur? Give the letter of the structure in Figure 39-3.

Which organ system is responsible for making and delivering sperm? female reproductive system nervous system endocrine system male reproductive system

Which of the following forms during gastrulation? Endoderm Mesoderm Ectoderm all of the above

Which stage of the human life cycle occurs first? Puberty Adolescence Adulthood childhood

In which organ does gastrulation occur? Penis Uterus Ovary vagina

Which body systems do Diagrams I and II in Figure 39-3 show?

____________________ is a period of rapid growth and sexual maturation during which the reproductive system becomes fully functional.

Which structure in Figure 39-3 produces sperm? Give both the name and the letter of this structure.

The placenta connects the fetus to the mother’s uterus. ectoderm to the endoderm. umbilical cord to the mother’s vagina. uterus to the cervix.

In humans, a male has one X chromosome only. two X chromosomes. one X chromosome and one Y chromosome. two Y chromosomes.

Almost everything that the mother takes into her body passes through the ____________________ to the embryo.

Which structure in Figure 39-3 releases eggs? What is this structure called?

Graphics Through which structure do sperm exit the male body? Give both the name and the letter of the structure in Figure 39-3.