Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
|
How do genes influence development
|
Human Genome Project (HGP)
|
|
|
over 10yrs of mapping the human genome succeeded in
|
developing the first initial sequence of the HG
|
|
|
how many genes does the HG contain
|
30,000
|
|
|
genome
|
all DNA in organism including genes
|
|
|
chromosomes
|
are the structures on which genes reside
|
|
|
DNA
|
provides blue print for development
|
|
|
genes
|
each gene contains the chemical recipe for making specific protein
|
|
|
who is the key in determining child's sex
|
father
|
|
|
what patterns do females have
|
xx
|
|
|
what patterns do males have
|
xy
|
|
|
if x ova and x sperm unite what gender is it
|
girl
|
|
|
if x ova and y sperm unite what gender is it
|
boy
|
|
|
common chromosomal abnormalitites
|
down syndrome: about 90% have extra 21 chromosome. referred to a trisomy 21
|
|
|
what age should women stop having children and why
|
35 because our ovaries have been exposed
|
|
|
what age should men stop having children
|
40
|
|
|
genetic counseling
|
consulation and testing to learn about one's genetic heritage inclduing harmful cond that may pass going to any children they may concieve
|
|
|
who should get genetic counseling
|
have parent, child or sibling with serious genetic cond
-have miscarriages or still births -are fertile -are from same ethinic group, particularly related to each other -women over age 35 and men over 40 |
|
|
why wouldn't high risk individuals want counseling
|
truth might jeopardize marriage, chance of parenthood and insurance
|
|
|
how does conception occurr
|
for pregnancy to occurr a human egg (ovum) and sperm must must and share genetic material
|
|
|
how does fertilization begin?
|
when a sperm penetrates the outer layer of the ovum
|
|
|
when is fertilization complete
|
when one of the chromosomes from the sperm and ovum combine to form 23 pairs
|
|
|
monozgotic twin
|
twins from one zgote
|
|
|
dizygotic twin
|
two separate ova fertilized by two separate sperm at roughly samt time (also called faternal)
|
|
|
Infertility
|
inability to conceive after at least a year of trying to do so via sexual iintercourse
|
|
|
assisted reproductive technology (ART)
|
general term for techniques designed to help infertile couples conceive then sustain a pregnancy
|
|
|
invitro fertilization (IFV)
|
fertilization that itakes place outside woman's body involves mixing sperm with/ova that have been surgically removed
|
|
|
1/3 of all IVF cycles produce what
|
a pregnancy
|
|
|
some infertile adults may achieve conception and birth with assistance of
|
donated sperm
donated ova donated womb |
