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