Genetics and Developmental Biology

What prion conformation may result in a prion-related infection?

What prion conformation may result in a prion-related infection?

What prion conformation may result in a prion-related infection?
 
  A. PrPSc
  B. PrPC
  C. Both can cause disease

GermanBiter14   72   2 Replies

GermanBiter14

Zip1 is a protein in yeast that is required for synaptonemal complex formation. Assuming ...

Zip1 is a protein in yeast that is required for synaptonemal complex formation. Assuming ...

Zip1 is a protein in yeast that is required for synaptonemal complex formation. Assuming synaptonemal complexes are required for meiosis in yeast, where do you predict these cells arrest (stop progressing through meiosis)?
 
  A. Prometaph

GermanBiter14   53   2 Replies

GermanBiter14

A pollen grain in a plant represents the ________.

A pollen grain in a plant represents the ________.

A pollen grain in a plant represents the ________.
 
  A. male gametophyte
  B. female gametophyte
  C. male sporophyte
  D. female sporophyte

GermanBiter14   113   1 Reply

kzeeb

A DNA strand can be described as antiparallel but uncomplementary. (True or false?)

A DNA strand can be described as antiparallel but uncomplementary. (True or false?)

A DNA strand can be described as antiparallel but uncomplementary.
 
  Indicate whether the statement is true or false

GermanBiter14   52   1 Reply

dawkins0126@aol

In the lac operon, the operator site is recognized by an activator protein. (True or false?)

In the lac operon, the operator site is recognized by an activator protein. (True or false?)

In the lac operon, the operator site is recognized by an activator protein.
 
  Indicate whether the statement is true or false

GermanBiter14   125   1 Reply

bolbol

Which of the following studies the effects of loss-of-function mutations?

Which of the following studies the effects of loss-of-function mutations?

Which of the following studies the effects of loss-of-function mutations?
 
  A. Population genetics
  B. Transmission genetics
  C. Molecular genetics

GermanBiter14   41   1 Reply

lachaison

The smooth endoplasmic reticulum has ribosomes attached to it. (True or false?)

The smooth endoplasmic reticulum has ribosomes attached to it. (True or false?)

The smooth endoplasmic reticulum has ribosomes attached to it.
 
  Indicate whether the statement is true or false

GermanBiter14   67   1 Reply

SarahSureShot

Seminoma is a benign testicular tumor (True or false?)

Seminoma is a benign testicular tumor (True or false?)

Seminoma is a benign testicular tumor.
 
  Indicate whether the statement is true or false

GermanBiter14   47   1 Reply

julieh2180

Which of the following statements regarding congenital polycystic kidney disease is INCORRECT?

Which of the following statements regarding congenital polycystic kidney disease is INCORRECT?

Which of the following statements regarding congenital polycystic kidney disease is INCORRECT?
 
  A. It is transmitted as a mendelian dominant trait.
  B. Enlarging cysts within the kidneys eventually destroy kidney function.
 

GermanBiter14   38   1 Reply

Alonzoperez1118

What are the three layers of the germ disk?

What are the three layers of the germ disk?

What are the three layers of the germ disk?
 
  What will be an ideal response?

GermanBiter14   58   1 Reply

michaelfotso

Which of the following statements regarding a hydatidiform mole is INCORRECT?

Which of the following statements regarding a hydatidiform mole is INCORRECT?

Which of the following statements regarding a hydatidiform mole is INCORRECT?
 
  A. It occurs less frequently in U.S. and Canadian women than in women living in Asia.
  B. Incomplete removal of a hydatidiform mole may be complicated

GermanBiter14   46   1 Reply

aboudyb

Patients who have had previous radiotherapy to the head and neck have an increased risk of ...

Patients who have had previous radiotherapy to the head and neck have an increased risk of ...

Patients who have had previous radiotherapy to the head and neck have an increased risk of developing thyroid tumors.
 
  Indicate whether the statement is true or false

GermanBiter14   42   1 Reply

603nurbk

Why is the 10-year survival rate for breast cancer lower than the 5-year survival rate? What will ...

Why is the 10-year survival rate for breast cancer lower than the 5-year survival rate? What will ...

Why is the 10-year survival rate for breast cancer lower than the 5-year survival rate?
 
  What will be an ideal response?

GermanBiter14   68   1 Reply

itsbouttim

What is the most common clinical manifestation of breast cancer?

What is the most common clinical manifestation of breast cancer?

What is the most common clinical manifestation of breast cancer?
 
  A. Lump
  B. Nipple or skin retraction
  C. Bloody discharge
  D. Pain
  E. Swelling

GermanBiter14   58   1 Reply

aboudyb

A metastatic tumor is one that:

A metastatic tumor is one that:

A metastatic tumor is one that:
 
  A. has spread to a location way from its site of origin.
  B. shows slow expansion and well-differentiated cells.
  C. cannot be classified easily.
  D. invades deeply into the tissue wher

GermanBiter14   41   1 Reply

fuzzycoconut20

Which of these is a benign tumor of fat cells?

Which of these is a benign tumor of fat cells?

Which of these is a benign tumor of fat cells?
 
  A. Adenocarcinoma
  B. Lipoma
  C. Liposarcoma
  D. Lymphosarcoma

GermanBiter14   41   1 Reply

EmilyMM265

Explain some of the characteristics that differentiate insulin shock from ketoacidosis. What will ...

Explain some of the characteristics that differentiate insulin shock from ketoacidosis. What will ...

Explain some of the characteristics that differentiate insulin shock from ketoacidosis.
 
  What will be an ideal response?

GermanBiter14   54   1 Reply

Madiy

A client is burned through all the dermis with only a few epidermal appendages intact. This burn is ...

A client is burned through all the dermis with only a few epidermal appendages intact. This burn is ...

A client is burned through all the dermis with only a few epidermal appendages intact. This burn is classified as:
 
  a. first degree.
  b. superficial partial-thickness.
  c. deep partial-thickness.
  d. third degree.

GermanBiter14   41   1 Reply

bleachvt

During the years that a woman is more likely to be sexually active, the vagina mucosa is protect-ed ...

During the years that a woman is more likely to be sexually active, the vagina mucosa is protect-ed ...

During the years that a woman is more likely to be sexually active, the vagina mucosa is protect-ed from infection by:
 
  a. the presence of autoantibodies.
  b. an acidic pH.
  c. low estrogen levels.
  d. douching.

GermanBiter14   59   2 Replies

GermanBiter14

Can I sequence DNA from home with a used sequencer?

Can I sequence DNA from home with a used sequencer?

Hi. I would like to further my self-learning of synthetic biology by learning how to sequence the DNA from my home lab. The experiment I'm currently focused on learning how to do, which is also serving as the catalyst for my learning, is to sequ

12

germinate_love   212   14 Replies

bio_man

On Covid-19 Testing Shortages in USA When Cheap PCR is Available

On Covid-19 Testing Shortages in USA When Cheap PCR is Available

I'm learning how to do PCR in my home lab and coincidentally, I encountered several pieces of key information which have prompted some questions about testing of the virus.

First, the CDC has published the following:
* [url=http

123

germinate_love   656   31 Replies

bio_man

Replicating DNA Cassette from Parent Strain, Plasmid Vector and Genotype

Replicating DNA Cassette from Parent Strain, Plasmid Vector and Genotype

I'm attempting to replicate a yeast transformation from a paper. The paper denotes that the strain which generated the best results as follows:

Name: ST9482
Parental Strain: ST9318
Added DNA Element: pC

germinate_love   422   5 Replies

dietervdwes

Which of the following terms best describes the place in a cladogram where a lineage splits?

Which of the following terms best describes the place in a cladogram where a lineage splits?

Q1. Which of the following terms best describes the place in a cladogram where a lineage splits?

Node
Branch
Root
Tip

Q2. (Hodges and his colleagues hypothesized that evolution of which of the following char

gh1991   28528   1 Reply

duddy

please help: hardy weinberg and things.. :)

please help: hardy weinberg and things.. :)

1. One factor that can make the effective population size (Ne) differ from the number of breeding individuals is the breeding sex ratio. What is the value of Ne for a population of 5 breeding adult males and 95 adult females? Explain why Ne is differ

gh1991   1520   1 Reply

bio_man

hellpp please on exam samples .. variation genetics

hellpp please on exam samples .. variation genetics

1. Why is genetic variation important in evolution?

2. How does inbreeding increase the strength of genetic drift within families in large populations, and how can this effect be empirically detected?

3. The graph below was prod

gh1991   1150   2 Replies

bio_man

genetic tree

genetic tree

a) Which character, if removed, would
have no effect on tree length?
Character IV
b) Which character provides a synapomorphy supporting the Hoelzerium/Hardassensis clade? Character II
c) Cynthiae+Moorehelpus are often lumped toget

gh1991   1557   3 Replies

bio_man

What is the number of deaths due to sickle-cell anemia in a region without mosquitoes expected to be

What is the number of deaths due to sickle-cell anemia in a region without mosquitoes expected to be

Q1. What are alleles?
a)Different forms of the same gene.
b)Different genes.
c)The different characteristics of an organism.
d)Genes found only in humans.

Q2. If you add up the frequency of homozygotes + the frequency o

gh1991   12712   2 Replies

duddy

Consider the following model in answering the following questions.

Consider the following model in answering the following questions.

1)Consider the following model in answering the following questions.
Genotype: A1A1  A1A2  A2A2
Fitness:       1         1      1-s
a) What kind of selection does this model r

gh1991   1039   1 Reply

bio_man

Species-accumulation curves

Species-accumulation curves

PICTURES ARE ATTACHED:
Q9. Examine the following statements about species-accumulation curves and check all that are true.
a-Accumulation curves are used to estimate local or alpha diversity.
b-Accumulation curves increase linearly as

12

gh1991   30616   20 Replies

Kendra Brown1

The theory of plate tectonics explains how Eath's continents move. According to this theory, which o

The theory of plate tectonics explains how Eath's continents move. According to this theory, which o

Q58. According to your regression analysis mammal diversity is best predicted by which of the following?
A-Temperature
B-Precipitation
C-Potential Evapotranspiration
D-Actual Evapotranspiration
E-Tree species richness
F-

gh1991   12212   4 Replies

bio_man

olympiad genetics question

olympiad genetics question

In 1652 a shipload of 20 immigrants landed South Africa and made an isolated community. One of the original colonists was a Dutch male carrying the gene for Huntington’s disease. The today’s high frequency of Huntington’s disease in

ghprggamer   582   1 Reply

deeAe

How do I know when to use one trait, two trait, sex-linked, etc?

How do I know when to use one trait, two trait, sex-linked, etc?

Hi I have a quiz coming up soon and I'm really confused. How do I know when to use sex-linked, one trait, two trait, incomplete dominance, complete dominance etc? I know that for sex-linked it's eye color, Duchenne, hemophilia and color bli

Gigi234   414   2 Replies

habiba

Diagramming a cross using a Punnett square

Diagramming a cross using a Punnett square

Punnett squares can be used to predict the two possible outcomes of the botanist’s test cross. The Punnett square on the left shows the predicted result if the unknown plant is homozygous (GG); the Punnett square on the right shows the predicted resu

gina1478   33050   6 Replies

topgunflyer2

Amorphic, hypomorphic, and dominant negative mutations are ________ mutations, which decrease or ...

Amorphic, hypomorphic, and dominant negative mutations are ________ mutations, which decrease or ...

Amorphic, hypomorphic, and dominant negative mutations are ________ mutations, which decrease or eliminate gene activity.

▸ Loss-of-function

▸ *

Gini   94   1 Reply

Meggs

During DNA replication inE. coli, how does the cell prevent the DNA strands from following their ...

During DNA replication inE. coli, how does the cell prevent the DNA strands from following their ...

During DNA replication in E. coli, how does the cell prevent the DNA strands from following their natural tendency to seek maximum stability and reanneal?

Gini   58   1 Reply

nahomf12

You have isolated a plasmid fromE. coli. You get the following results, using three restriction ...

You have isolated a plasmid fromE. coli. You get the following results, using three restriction ...

[html]You have isolated a plasmid from E. coli. You get the following results, using three restriction enzymes, 1 XhoI, 

Gini   94   1 Reply

SarahJoseph

During the early part of a young human's life, when milk is a main source of nutrition, the E. coli ...

During the early part of a young human's life, when milk is a main source of nutrition, the E. coli ...

During the early part of a young human's life, when milk is a main source of nutrition, the E. coli in the young offspring's intestinal tract are exposed to high levels of which of the following?
 
  a. glucose
  b. ribose
  c. c

GIVEMEAWNSERFUC   45   1 Reply

Yeheye

Mutations are permanent changes in a cell's DNA base sequence. They typically have negative ...

Mutations are permanent changes in a cell's DNA base sequence. They typically have negative ...

Mutations are permanent changes in a cell's DNA base sequence. They typically have negative consequences, but they are also the original source of genetic variation and the raw material of evolution. How can mutations accumulate, given that cells hav

GIVEMEAWNSERFUC   62   1 Reply

kaygarciaa

The quick response of the immune system to a second infection is due to the _____, a feature of the ...

The quick response of the immune system to a second infection is due to the _____, a feature of the ...

The quick response of the immune system to a second infection is due to the _____, a feature of the immune system as demonstrated by the success of vaccines.
 
  a. activation of macrophage cells
   b. suppression of suppressor cells

GIVEMEAWNSERFUC   49   1 Reply

Ranggadimsz

Explain how to determine if a nondisjunction occurred during meiosis I or meiosis II and what the ...

Explain how to determine if a nondisjunction occurred during meiosis I or meiosis II and what the ...

Explain how to determine if a nondisjunction occurred during meiosis I or meiosis II and what the genetic consequences are for the resulting fertilized gametes.
 
  What will be an ideal response?

GIVEMEAWNSERFUC   62   1 Reply

SarahSureShot