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Lecture 5: Diseases of Development
Celebrating 1 year of existence
Terms in this set (50)
Fertilization is the uniting of a sperm and ovum resulting in ____ pairs of chromosomes.
Somatic cells would use ____________ to divide.
Which type of cellular division involves homologous chromosomes lining up at the cells equator?
True or false: Every genetic trait is influenced by at least four alleles (except for genes located on sex chromosomes in males)
False: influenced by at least 2
Mendelian traits are controlled by ___ alleles.
True or false: genotype can be defined as the genetic makeup of an individual. It can predict how genes are expressed.
False: cannot predict how gene is expressed. Depends on dominant or recessive.
What is nonpenetrance?
An individual has a genetic variant, but does not express it via phenotype.
What is variable expressivity?
Variable expressivity: individuals with the same variant do not show precisely the same disease or quantitative phenotype characteristics.
How long is gestation?
38 weeks (40 for LMP)
Embryonic period is how long?
8-9 weeks after fertilization
Fetal period is how long?
Week 9 until birth
Perinatal period is how long?
2 weeks until birth
Neonatal period is how long?
birth through 4 weeks
Infancy is how long?
1 month through 1 year
Childhood is from _________ to _________.
infancy to puberty
Recommended textbook explanations
Campbell Biology (AP Edition)
Cain, Campbell, Minorsky, Reece, Urry, Wasserman
Lehninger Principles of Biochemistry
David L Nelson, Michael M. Cox
Biocalculus: Calculus for the Life Sciences
Lisa A. Urry, Michael L. Cain, Peter V Minorsky, Steven A. Wasserman
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