Questions
What is the role of decarboxylation in fatty acid synthesis? Name another reaction in a different...

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...

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...

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...

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:...

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...

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

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,...

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

What is ligation-mediation PCR? Explain what it is used for and how it works

In: Biology

what are mitochondria genetic mark in the family tree origen and how are they found? please...

what are mitochondria genetic mark in the family tree origen and how are they found? please explain in details

In: Biology

How would you determine whether the morphological diversity of animals has increased, decreased, or stayed the...

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...

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: 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...

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...

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