問題一覧
1
What causes identical twins?
One zygote divides
2
how long is prophase, metaphase, anaphase, telophase?
Less than 1 hour
3
What is Oogenesis?
The production of Female eggs
4
which of the following is NOT a reason why cells divide
to become larger
5
What prenatal test involved removing a sample of the placenta from the womb?
Chronic Villus Sampling (CVS)
6
in which phase does synapsis occur?
prophase 1
7
What is an example of a gamete?
sperm cell
8
in meiosis you start with a ______ and end with a _______
diploid, haploid
9
if an organism has n=54, how many chromosomes are produced during meiois?
27
10
during which phase do homologous pairs line up in the middle?
metaphase 1
11
How many sperm cells are made at the end of spermatogenesis?
4
12
How many PAIRS of autosomes do humans have?
22
13
Normal DNA Strand: AATTCCGGATC Mutated DNA strand: AATTCCGGCCGGATC Which mutation error occurred?
duplication
14
what is the place where synapsis occurs?
chiasmata
15
The stages of meiosis 2 are: interphase 2, prophase 2, metaphase 2, anaphase 2, and telophase 2
false
16
What occurs during meiosis which ensures increased genetic diversity in the gametes?
Crossing-over and independent assortment
17
if an organisms n= 102 what is its diploid number ?
204
18
What causes fraternal twins?
Two sperm fertilizes two eggs
19
what produces spindle fibres?
centrosomes
20
how long is interphase?
23 hours
21
what is turner syndrome?
missing x chromosomes
22
what is a section with a phosphate, sugar, and nitrogenous base called?
nucleotide
23
what causes monosomy and trisomy disorders?
disjunction
24
what is a postnatal test? give an example
after birth to determine anything wrong. this could be an xray
25
What is the purpose of the S phase?
DNA replication
26
what are the three types of stem cells?
embryonic, adult, induced pluripotent.
27
Griffin has a GYATT true or false?
true
28
did you pray today?
cause if you didn’t ima have to DICK YOU DOWN
29
what is a bivalent?
two pairs of homologous chromosomes
30
what is an example of an animal that can do asexual reproduction?
Komodo dragon
31
which of the following amount of chromosomes could indicate a monosomy?
45
32
how many cells are in your body?
trillions
33
Which of the following stem cells have the greatest ethical concerns?
embryonic stem cells
34
A farmer mated one of his prize-winning cows with one of his prize-winning bulls. What reproductive technology did he use?
Selective breeding
35
what is a prenatal test? give one example
determines any type of disorders before birth. example CVS
36
what is another way of saying replicated chromosome?
sister chromatids
37
what phase of meiosis is this in?
prophase 2
38
which disorder occurs due to a trisomy of chromosome 21?
Down syndrome