10. How can it be determined if a fetus has a chromosomal defect?
11. Give FOUR types of chromosomal mutations. EXPLAIN what happens in EACH
2007-12-01 09:58:19 · 2 answers · asked by Mathⁿ 4 in Science & Mathematics ➔ Biology
10) Amniocentesis & Karyotyping.
11) Translocation: Pieces of chromatids break off and reattach
onto a nonhomologous chromatid during meiosis.
Nondisjunction:One or several chromosomes fail to separate during meiotic anaphase.
Inversion: Chromosome "loops", breaks off and reattaches in an inverted position
Deletion: Chromosome breaks off and is lost.
Addition: Chromosome breaks off and reattaches onto another chromosome (unpredictable result, but new organism may end up with two corollas (in flowers) or an additional leg or wing)
2007-12-01 10:58:49 · answer #1 · answered by ursaitaliano70 7 · 0⤊ 0⤋
10) Amneocentesis - a needle extraction of genetic material from the fetus, can be used to examine the genetics of the fetus for defects by looking for key "defect" markers that indicate a variety of genetic problems.
11) a) Hair-lip : in this mutation, the baby is born with a very hairy upper lip. It looks like a moustache, and the baby may also have other strong secondary sexual characteristics as though it went through puberty.
b) Dualanalism: when marker 2 is especially pronounced, the fetus may develop 2 or more anuses. This will mean at least twice as many diapers for the parents.
c) Hugoweaving Syndrome: A person with this condition will act very stiffly in multiple matrixes.
d) Dwarfare: A person born with Dwarfare will be inclined to short periods of bellicose behavior regardless of external stimulii.
2007-12-01 18:10:22 · answer #2 · answered by dungeonmistermisty 3 · 0⤊ 0⤋