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BIO 104

QuestionAnswer
A human cell with 46 chromosomes is euploid.
The three primary germ layers in an embryo are endoderm, ectoderm, mesoderm
Menarche is known as the first menstrual flow.
The developmental stage which lasts from birth until death is called the postnatal stage
The production of female gametes and secretion of female sex hormones is the function of the ovaries
Stage of human development when the capability of sexual reproduction first appears: Adolescence
To fertilize an egg, enzymes in the sperm _______ help digest a tunnel through the corona radiata: Acrosome
What triggers milk ejection during nursing? Infant suckling stimulating oxytocin release
The first true diploid cell of the future baby: Zygote
Where are sperm produced? seminiferous tubules
Which is the average range for a normal pregnancy? 38-42 weeks
Down syndrome is caused by nondisjunction or a translocation.
How many chromosomes are in human gametes? 23
Ovulation usually occurs 2 weeks before the menstrual period begins. (around day 14)
What is the primary female reproductive organ? ovaries
The name of the hormone which increases the force and frequency of uterine contractions is oxytocin
Word segment that means "other": Hetero-
Which of the following are gametes? ova, ova
An allele that masks the effect of another is dominant.
An allele that is not expressed in the heterozygous condition is recessive.
A gene is a DNA sequence that contains the information for producing one type of protein.
What are the main stages of labor? placental expulsion, fetal expulsion, dilation
A karyotype is a size-ordered chart of chromosomes.
What is the stage between birth and one month called? neonatal period
Which are the tubes that transport oocytes to site of fertilization? oviducts
Created by: Lecia220
 

 



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