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Browse through our recently updated questions and discussion topics.
Determining parental and F1 genotypes in crosses involving polygenic inheritance
Determining parental and F1 genotypes in crosses involving polygenic inheritance
You decide to designate the alleles of the four loci as either additive (contributing to fruit segment number and represented by a superscript “+”) or non-additive (not contributing to fruit segment number and represented by a superscript “0”). Using this convention, choose the correct genotype for the two pure lines and the F1, and indicate how many additive alleles each genotype h
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Genetics and Developmental Biology   KendraJo   9219   26   Daryam Galan   3 hours ago
All of the following are characteristics of corporate universities EXCEPT ________.
All of the following are characteristics of corporate universities EXCEPT ________.
All of the following are characteristics of corporate universities EXCEPT ________.

▸ evaluating learning and performance

▸ utilizing technology to support learning

▸ aligning with corporate strategic goals

▸ partnering with other firms
Human Resources   lihui   208   3   Anonymous    4 hours ago
Lance's doctor told him 15 years ago that if he did not change his lifestyle, the drinking, ...
Lance's doctor told him 15 years ago that if he did not change his lifestyle, the drinking, ...
[html]Lance's doctor told him 15 years ago that if he did not change his lifestyle, the drinking, smoking, and drug abuse were going to kill him. Lance didn't heed the warning, claiming that if he died no one would miss him anyway, and now he has died. Lance's situation is best considered to be an example of:

▸ suicidal erosion

▸ passive death

▸ assisted suicide

▸ unilateral dea
Developmental Psychology   tamara   435   3   Anonymous    12 hours ago
Matrices Questions
Matrices Questions
Need help, all information is in the uploaded photo.

A lamp of weight \(W = 50(1 + \sqrt(3))\) N is fixed to a wall by a two-bar truss with forces F1 and F2 exerting at the lamp attachment point as shown in the figure below. From the equilibrium forces and moments, the magnitudes F1 = IlF1Il and F2 = IlF2Il satisfy the following system equations:
Mathematics   Anonymous   62   4   fgarza2146   18 hours ago
Gaussian Elimation
Gaussian Elimation
Need help with Gaussian Elimination questions as i dont understand how it works, videos would be great as well.

Find the indicated inverse matrix using Gaussian elimination on the augmented matrix.
Mathematics   Anonymous   57   3   Anonymous    One day ago
Lauren's gross pay for July was $3188.35 on net sales totalling $88,630. If her base salary is ...
Lauren's gross pay for July was $3188.35 on net sales totalling $88,630. If her base salary is ...
Lauren's gross pay for July was $3188.35 on net sales totalling $88,630. If her base salary is $1000 per month, what is her rate of commission on sales exceeding her monthly quota of $40,000? (Round to the nearest 0.01%)
Mathematics   bigben0007   99   2   Anonymous    One day ago
The conquest of California was relatively simple and involved little loss of life. (True or false?)
The conquest of California was relatively simple and involved little loss of life. (True or false?)
The conquest of California was relatively simple and involved little loss of life.
 
  Indicate whether the statement is true or false
Other   Twitchin   208   3   Dr.Vista   One day ago
Ainsley, a three-year-old child, is given a rubber ball that has been painted to look like an orange
Ainsley, a three-year-old child, is given a rubber ball that has been painted to look like an orange
Ainsley, a three-year-old child, is given a rubber ball that has been painted to look like an orange. When Ainsely is asked what the object looks like, she is most likely to say “___.” When she is asked what it is really, she is most likely to say, “___.”
a.   an orange, an orange
b.   a ball, a ball
c.   an orange, a ball
d.   a ball, an orange
Developmental Psychology   Caileigh89   505   6   iHome   One day ago
Transformation of Matrices
Transformation of Matrices
How does it transform? little confused

Find the matrix M that perform the following space transformations. Based on the determinant |M|, mention whether the transformation shrinks or expands areas, and whether it inverts them.
Mathematics   Anonymous   47   2   Anonymous    2 days ago
Order: Zofran (ondansetron HCl) 4 mg IVPB, add to 50 mL D NS and infuse in 20 min. via pump. The ...
Order: Zofran (ondansetron HCl) 4 mg IVPB, add to 50 mL D NS and infuse in 20 min. via pump. The ...
Order: Zofran (ondansetron HCl) 4 mg IVPB, add to 50 mL D NS and infuse in 20 min. via pump. The label on the vial reads 2 mg/mL. At how many milliliters per hour will you set the infusion pump (mL/h)?
 
  1. 156 mL/hr
  2. 50 mL/hr
  3. 104 mL/hr
  4. 54 mL/hr.
Nursing and Clinical   kjm   288   4   ally   2 days ago
What type of charging system regulation will incorporate a battery current sensor?
What type of charging system regulation will incorporate a battery current sensor?
What type of charging system regulation will incorporate a battery current sensor?

▸ External mechanical

▸ External electronic

▸ Internal electronic

▸ PCM controlled
Trades and Apprenticeship   Djkratos264   137   3   Ashleydfkshkfhk   2 days ago
a solution is prepared in which a trace or small amount of Fe2+ is added to a much larger amount of solution..
a solution is prepared in which a trace or small amount of Fe2+ is added to a much larger amount of solution..
...which the [OH-] is 1.0 x 10^-2 M. Some Fe(OH)2 precipitates. The value of Ksp for Fe(OH)2 = 8.0 x10^-10.

A. Assuming that the hydroxide is 1.0 x 10^-2 M, calculate the concentration of Fe2+ ions in the solution.

B. A battery is prepared using the above solution with an iron wire dipping into it as one half-cell. The other half-cell is the standard nickel electrode. Write the ba
1234
Chemistry   freddy0622   7236   42   Nhan Tran   2 days ago
Does the glu– allele ever confer a disadvantage?
Does the glu– allele ever confer a disadvantage?
In the presence of poison-laced glucose, cockroaches that refuse glucose will have a much higher survival rate than cockroaches that feed indiscriminately. This explains why the glu– allele frequency increases over time in a population exposed to poison + glucose bait. However, energy from carbohydrates is required for growth and reproduction, and glucose is commonly found in non-po
General Biology   gray87   4312   8   Fatumata Kamara1   3 days ago
What were the underlying motives and ideological beliefs driving westward expansion during the 19th ...
What were the underlying motives and ideological beliefs driving westward expansion during the 19th ...
What were the underlying motives and ideological beliefs driving westward expansion during the 19th century, and how did these attitudes contribute to the concept of Manifest Destiny?
History   Anonymous   43   Anonymous    3 days ago
To what extent did westward expansion in the 19th century have long-lasting environmental ...
To what extent did westward expansion in the 19th century have long-lasting environmental ...
To what extent did westward expansion in the 19th century have long-lasting environmental consequences?
History   Anonymous   42   Anonymous    3 days ago
A compound containing chromium and silicon contains 73.52 mass percent chromium. Determine its ...
A compound containing chromium and silicon contains 73.52 mass percent chromium. Determine its ...
A compound containing chromium and silicon contains 73.52 mass percent chromium. Determine its empirical formula.

▸ CrSi3

▸ Cr2Si3

▸ Cr3Si

▸ Cr3Si2

▸ Cr4Si3
Chemistry   yojoe102   44   sagitario81   3 days ago
A certain compound of bromine and fluorine is used to make UF6, which is an important chemical in ...
A certain compound of bromine and fluorine is used to make UF6, which is an important chemical in ...
A certain compound of bromine and fluorine is used to make UF6, which is an important chemical in the processing and reprocessing of nuclear fuel. The compound contains 58.37 mass percent bromine. What is its empirical formula?

▸ BrF

▸ BrF2

▸ Br2F3

▸ Br3F

▸ BrF3
Chemistry   dalvirb   40   ikidding   3 days ago
To make a sp3 hybrid orbital, one s atomic orbital is mixed with three p atomic orbitals.
To make a sp3 hybrid orbital, one s atomic orbital is mixed with three p atomic orbitals.
To make a sp3 hybrid orbital, one s atomic orbital is mixed with three p atomic orbitals.

▸ true

▸ false
Chemistry   bananas87   35   dmp7474   3 days ago
To correctly determine the molecular shape of a molecule requires that you first draw the Lewis ...
To correctly determine the molecular shape of a molecule requires that you first draw the Lewis ...
To correctly determine the molecular shape of a molecule requires that you first draw the Lewis structure for the molecule.

▸ true

▸ false
Chemistry   schweet   28   shadowblacw   3 days ago
The number of lone pairs of electrons on the central atoms is an important factor used to determine ...
The number of lone pairs of electrons on the central atoms is an important factor used to determine ...
The number of lone pairs of electrons on the central atoms is an important factor used to determine the molecular shape or molecular geometry.

▸ true

▸ false
Chemistry   hardy7luver   33   lampard   3 days ago
The energy of a hydrogen bond is greater than that of a typical covalent bond.
The energy of a hydrogen bond is greater than that of a typical covalent bond.
The energy of a hydrogen bond is greater than that of a typical covalent bond.

▸ true

▸ false
Chemistry   tara.harris.9   23   crazyali16   3 days ago
The BrF5 molecule has polar bonds and has a net dipole moment.
The BrF5 molecule has polar bonds and has a net dipole moment.
The BrF5 molecule has polar bonds and has a net dipole moment.

▸ true

▸ false
Chemistry   arunasingh5   23   clarkh7839   3 days ago
The bond angle for a sp hybrid orbital is smaller than the bond angle for an sp2 hybrid orbital.
The bond angle for a sp hybrid orbital is smaller than the bond angle for an sp2 hybrid orbital.
The bond angle for a sp hybrid orbital is smaller than the bond angle for an sp2 hybrid orbital.

▸ true

▸ false
Chemistry   berry   23   jmoline2   3 days ago
The angles between sp2 hybrid orbitals are 109.5.
The angles between sp2 hybrid orbitals are 109.5.
The angles between sp2 hybrid orbitals are 109.5°.

▸ true

▸ false
Chemistry   usmc2rn   21   webmom2008   3 days ago
Pi bonds are covalent bonds in which the electron density is concentrated above and below the plane ...
Pi bonds are covalent bonds in which the electron density is concentrated above and below the plane ...
Pi bonds are covalent bonds in which the electron density is concentrated above and below the plane of the nuclei of the bonding atoms.

▸ true

▸ false
Chemistry   freezo1994   34   moraa   3 days ago
Only molecules which do not have dipole moments can experience dispersion forces.
Only molecules which do not have dipole moments can experience dispersion forces.
Only molecules which do not have dipole moments can experience dispersion forces.

▸ true

▸ false
Chemistry   courtneyjuma   20   twnklstr   3 days ago
Octane, C8H18, boils at 125C, whereas water boils at 100C. This information suggests that the ...
Octane, C8H18, boils at 125C, whereas water boils at 100C. This information suggests that the ...
Octane, C8H18, boils at 125°C, whereas water boils at 100°C. This information suggests that the dispersion forces in nonpolar octane molecules are stronger than the dispersion forces and hydrogen bonding in water.

▸ true

▸ false
Chemistry   pgakui   24   Marinaanderson0   3 days ago
In the valence bond treatment, overlap of an s orbital on one atom with a sp3 orbital on another ...
In the valence bond treatment, overlap of an s orbital on one atom with a sp3 orbital on another ...
In the valence bond treatment, overlap of an s orbital on one atom with a sp3 orbital on another atom gives rise to a σ bond.

▸ true

▸ false
Chemistry   Bluffinmuffin   28   lnvolley24   3 days ago
In the valence bond treatment, a
In the valence bond treatment, a
[html]In the valence bond treatment, a
Chemistry   Jennthejelly   22   sherry94   3 days ago
Atoms of period 3 and beyond can undergo sp3d2 hybridization, but atoms of period 2 cannot.
Atoms of period 3 and beyond can undergo sp3d2 hybridization, but atoms of period 2 cannot.
Atoms of period 3 and beyond can undergo sp3d2 hybridization, but atoms of period 2 cannot.

▸ true

▸ false
Chemistry   ahyukj   21   krissyc39   3 days ago
According to the VSEPR model, a molecule with the general formula AB3 possessing two lone pairs on ...
According to the VSEPR model, a molecule with the general formula AB3 possessing two lone pairs on ...
According to the VSEPR model, a molecule with the general formula AB3 possessing two lone pairs on the central atom has a trigonal planar molecular geometry.

▸ true

▸ false
Chemistry   cc84sc   35   slpm   3 days ago
According to molecular orbital theory, all diatomic molecules with an even number of electrons are ...
According to molecular orbital theory, all diatomic molecules with an even number of electrons are ...
According to molecular orbital theory, all diatomic molecules with an even number of electrons are diamagnetic.

▸ true

▸ false
Chemistry   villain   26   vicky12345   3 days ago
A molecule that contains polar bonds will always have a dipole moment.
A molecule that contains polar bonds will always have a dipole moment.
A molecule that contains polar bonds will always have a dipole moment.

▸ true

▸ false
Chemistry   johndoris   17   ggyxxcool   3 days ago
Which substance will exhibit hydrogen bonding between molecules?
Which substance will exhibit hydrogen bonding between molecules?
Which substance will exhibit hydrogen bonding between molecules?

▸ (CH3)3N

▸ CH3–O–CH3

▸ CH3CH2–OH

▸ CH3CH2–F

▸ HI
Chemistry   badd99   19   olskee   3 days ago
Which substance should exhibit hydrogen bonding in the liquid phase?
Which substance should exhibit hydrogen bonding in the liquid phase?
Which substance should exhibit hydrogen bonding in the liquid phase?

▸ PH3

▸ He

▸ H2S

▸ CH4

▸ CH3OH
Chemistry   bioFREAK11   26   windytodai   3 days ago
Which statement is not true of molecular orbitals?
Which statement is not true of molecular orbitals?
[html]Which statement is not true of molecular orbitals?

▸ The number of molecular orbitals formed is always equal to the number of atomic orbitals combined.

▸ A molecular orbital can accommodate up to two electrons.

▸ When electrons are added to orbitals of the same energy, the most stable arrangement is predicted by Hund's rule.

▸ Low-energy molecular orbitals fill be
Chemistry   cacerami   18   eap8   3 days ago
Which statement about orbital hybridization is incorrect?
Which statement about orbital hybridization is incorrect?
[html]Which statement about orbital hybridization is incorrect?

▸ The carbon atom in CH4 is sp3 hybridized.

▸ The carbon atom in CO2 is sp hybridized.

▸ The nitrogen atom in NH3 is sp2 hybridized.

▸ sp2 hybrid orbitals are coplanar, and at 120° to each other.

▸ sp
Chemistry   SeaBass2013   19   majudomminick   3 days ago
Which one of the following pure substances will exhibit hydrogen bonding?
Which one of the following pure substances will exhibit hydrogen bonding?
Which one of the following pure substances will exhibit hydrogen bonding?

▸ CH4

▸ H2C=CH2

▸ H2O

▸ CHCl3

▸ CHF3
Chemistry   mahan1994   19   DNA_Helicase   3 days ago
Which one of the following pure substance has both dispersion forces and dipole-dipole forces?
Which one of the following pure substance has both dispersion forces and dipole-dipole forces?
Which one of the following pure substance has both dispersion forces and dipole-dipole forces?

▸ HCl

▸ BCl3

▸ Br2

▸ H2

▸ CO2
Chemistry   bmwprincess   20   herroo   3 days ago
Which one of the following molecules is polar?
Which one of the following molecules is polar?
Which one of the following molecules is polar?

▸ CH4

▸ CHBr3

▸ F2

▸ CBr4

▸ CO2
Chemistry   yosie   20   fujioki   3 days ago
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