What is the role of decarboxylation in fatty acid synthesis? Name another reaction in a different
metabolic pathway that employs this mechanistic motif.
I know the role is to drive the condensation reaction but I'm stuck on finding another example.
In: Biology
You are following 5 recessive traits in an animal: a, b, c, d, and e. Your student gives you a heterozygous animal, and you testcross this animal. You collect the following 10,000 progeny:
2000 acbe
250 cd
10 c
130 wild type
170 be
220 abe
230 a
2120 ac
10 ad
2100 dbe
180 cad
20 cbe
2150 d
230 cdbe
30 adbe
150 cadbe
A. What is the starting genotype of the heterozygous animal? Indicate which traits are in cis and which in trans.
B. What are the map distances between the genes?
In: Biology
Drug use during pregnancy can include alcohol, tobacco, illicit, and over-the-counter medications. List 4 specific risks that can result from using drugs during pregnancy.
a) |
b) |
c) |
d) |
In: Biology
Describe how a poison could affect the electron transport system in cellular respiration. Explain how it happens, the result, and give an example. Be specific but can you also dumb it down.
In: Biology
For each acronym, indicate if it’s either a technique, a molecule or a cellular/molecular event
Note: If a molecule is involved in a technique, you should still select “molecule”
Cas |
|
HGP |
|
NHEJ |
|
SDMP |
|
ZIFT |
|
TALE |
|
ICSI |
|
ZFN |
|
PTR |
|
IUI |
|
IVF |
|
PGD |
|
ART |
|
TLV |
|
rtDNA |
|
CIPA |
|
MGOI |
|
DSB |
|
HDR |
|
gRNA |
In: Biology
Researchers involved in sequencing the human genome anticipated that the effort would raise ethical, legal and social concerns. Identify and describe at least one ethical, legal or social concern. (100+words)
In: Biology
19(a). Angiosperms and gymnosperms produce
fruit and pollen
seeds and fruit
seeds and flowers
seeds and pollen
In: Biology
Causes of Cancer and Treatments
What are some causes of cancer? Think about environmental, lifestyle, viral, and genetic factors. Know what is meant by targeted therapies for cancer – how are they different from more traditional approaches like radiation and chemotherapy?
In: Biology
What is ligation-mediation PCR? Explain what it is used for and how it works
In: Biology
In: Biology
How would you determine whether the morphological
diversity of animals has increased, decreased, or stayed the same
since the Cambrian? Explain what kind of data you would collect,
how you would analyze it, and what sorts of biases you might need
to correct for.
Choose three species of wild organisms (not
domesticated species or humans) and predict how their populations
and geographic ranges will change in the future, assuming that
global climate change continues at its current rate.
please answer both questions!!
In: Biology
Describe how the mitotic spindle, cohesin, APC, separase and securin work together with each other, at the appropriate time in the mitotic phase of the cell cycle, to align the chromosomes along the metaphase plate and how they work together to allow/cause separation of the sister chromatids. Be specific and detailed.
In: Biology
Homo: The Humans
During the Pliocene-Pleistocene transition the Homo genus appeared in the fossil record. The Homo genus is a a continuation of the Gracile Australopithecines. Like those that came before, Homo is an obligate biped, but unlike its precursors Homo displays a unique set of physical adaptations along with behaviors that make the genus unique among hominins. To begin with, Homo and all its eventual lineages display hunting behaviors along with the associated stone tools necessary to process meat. At the same time, the creation and dependence on stone tools and other cultural technologies is a function of the increase in brain size that begins with the onset of Homo.
Hunting, the new Homo subsistence pattern, required not just a new kind of mind set to create new cultural technologies but at the same time required a specialized hand that would allow for better manipulation of objects while being capable of resisting the unique physical pressures associated with making tools.
In addition, being able to run after prey became essential. The Homo genus was the first to display adaptations that allow for endurance running. The type of running that Homo becomes known for is not a type of running that allows us to be fast but rather it allows us to run for long distances at a pace which forces prey to undergo hyperthermia over the long run.
Your task for this activity will be to compare and contrast the locomotor features of Australopithecus afarensis to Homo erectus. You will accomplish this by answering the following.
Before you begin make sure view all relevant reading material so that you can give me informed opinions.
What anatomical features makes it possible for Homo erectus to be a biped runner.
Pick only one feature discussed in this week's material that allowed Homo erectus to be a biped runner.
How is your chosen feature different from Australopithecus aferensis equivalent feature? Briefly explain the difference.
Lastly, I would like you to briefly explain in your own words how endurance running would enhance the fitness of the Homo genus.
In: Biology
Describe the sequence of steps for an action potential of one neuronal cell leads to the action potential in a postsynaptic cell.
In: Biology
In mice the loci for tail length, fur color and whisker shape are found on the same chromosome. Long tails (T) are dominant to short tails (t), brown fur (B) is dominant to white fur (b) and straight whisker (S) are dominant to curled whiskers (s). Mice that were homozygous dominant for all three characters were crossed with mice homozygous recessive for all three characters and all of the offspring had long tails, brown fur and straight whiskers. These F1 mice were test crossed. The phenotypes of the offspring from these crosses are shown in the following table.
Tail phenotype | Fur phenotype | whisker phenotype | number of progeny |
short | brown | straight | 13 |
long | white | straight | 19 |
short | white | straight | 6 |
long | brown | straight | 43 |
short | brown | curled | 22 |
long | white | curled | 15 |
short | white | curled | 46 |
long | brown | curled | 5 |
a. Use the information in this table to construct a genetic map. Include the distances between the loci on your map.
b. For the data in this table calculate the interference. What does this value mean?
In: Biology