A&P Chapter 24

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a genotype is a status of an individual that is based on the combination of alleles for one gene or many

True

The blood vessels of the embryo are formed by the end of the t

third week

genes that appear on the x chromosome are referred to as the x-linked

true

when the embryo is impaneled in an area other than the uterus the condition is called an ectopic pregnancy

true

The structure that forms a fluid filled ac is the

amnion

human games contain 46 chromosomes

false

the flattened cell mass developed during the early embryonic stage, which has an outer ectoderm and an inner endoderm is called a chorion

false

After which day of development is the fetus considered to be full term?

266

The structure that forms during the third week of development, as a tube extending from the early yolk sac into the connecting stalk of the embryo is the

Allantois

an offspring between the eighth week and birth is referred to as an embryo

FALSE

the placenta produces all the following hormones except

Luteinizing hormone

The ectoderm forms

The nervous system

which of the following are identical cells that produced by early cleavage?

blastomeres

The trophoblast forms the

chorion

The mass of cells that is formed after many cells divisions following fertilization is called a

morula


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