1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aalyn [17]
3 years ago
7

Refer to the figure showing a pedigree of a family affected by an x-linked recessive disorder. A female in generation 3 isn't a

carrier of the disorder. How can this be?
A. Females receive X chromosomes from this fathers only, which are unaffected in this case.
B. Females don't have X chromosomes so aren't affected by gene disorders passed on the X chromosome.
C. Females receive an X chromosomes from each point parent, but in cases of recessive disorders, the muted chromosome isn't passed on to daughters.
D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.

Chemistry
2 answers:
maria [59]3 years ago
5 0

Answer:

D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.

Explanation:

Females have XX chromosomes as allosomes. They receive one X chromosome from mother and one from father. The female in the III generation received both the healthy X chromosomes from each parent that is why she is not even carrier for the disease.

The modified diagram clearly indicating the genotyope of all the members of the pedigree tree is attached. In the diagram, healthy X chromosome is indicated by X while mutated X chromosome is indicated by doted X. It is clear from the diagram that this female of III generation has XX chromosomes.  

The cross for that particular female is shown as under:

                               Mother               Father

                                   ẊX      x             XY

                                  /     \                  /     \

                               ẊX     ẊY          XX    XY

XX are the allosomes of this female child.

<h2 />

kari74 [83]3 years ago
3 0

Answer: D.

Explanation: Females have XX chromosomes while males have XY

You might be interested in
I need a answer quick. PLEASE<br><br>What is the volume of 2.43 x 1023 molecules of N2 gas at STP?
Readme [11.4K]
I think it is 2485.89.
6 0
3 years ago
SCIENCE!!!! PLEASE HELP!!! 20 POINTS
Annette [7]

Answer:

As the Earth rotates, it also moves, or revolves, around the Sun. ... As the Earth orbits the Sun, the Moon orbits the Earth. The Moon's orbit lasts 27 1/2 days, but because the Earth keeps moving, it takes the Moon two extra days, 29 1/2, to come back to the same place in our sky.

Explanation:

4 0
3 years ago
Read 2 more answers
Calculate the molarity of 13.1 g of NaCl in 727 mL of solution
valentina_108 [34]

Answer:

The molarity of the solution is 0,31 M

Explanation:

We calculate the weight of 1 mol of NaCl from the atomic weights of each element of the periodic table. Then, we calculate the molarity, which is a concentration measure that indicates the moles of solute (in this case NaCl) in 1000ml of solution (1 liter)

Weight 1 mol NaCl= Weight Na + Weight Cl= 23 g + 35, 5 g= 58, 5 g

58, 5 g-----1 mol NaCl

13,1 g ---------x= (13,1 g x 1 mol NaCl)/58, 5 g= 0, 224 mol NaCl

727 ml solution------ 0, 224 mol NaCl

1000ml solution------x= (1000ml solutionx0, 224 mol NaCl)/727 ml solution

x=0,308 mol NaCl---> <em>The solution is 0,31 molar (0,31 M)</em>

5 0
3 years ago
Calculate the lattice energy for NaF (s) given the following
san4es73 [151]

Answer: E

Explanation:

The lattice energy is the energy change when one mole of a crystal is formed from its components ions in its gaseous sate

Therefore lattice energy = heat of Sublimation+ ionization energy +electron affinity-(heat of formation)

Therefore lattice Energy =     109 +495 -328 +570.

Lattice energy = --923kjmol-1

3 0
3 years ago
What type of solid is this? This solid has high melting point, does not conduct electricity, and does not dissolve in water. Met
vivado [14]
The awnser It is iconic
5 0
3 years ago
Other questions:
  • Plaster casts, CaSO4 Spell out the full name of the elements in alphabetical order separated by commas.
    10·2 answers
  • What is the volume of a 0.0355mol/L calcium hydroxide solution required to react completely with 50.0mL of 0.250mol/L aluminum s
    5·1 answer
  • Which of these pairs of elements have the same number of valence electrons?
    15·1 answer
  • What precipitate sometimes forms during an acid-base neutralization reaction?
    7·2 answers
  • According to the VSEPR model, the progressive decrease in the bond angles in the series of molecules CH₄, NH₃, and H₂O is best a
    11·1 answer
  • What is the region of a longitudinal wave where particles are closest together called?
    14·2 answers
  • Calculate the amount of mole of gas which occupies 250cm at S.T.P ​
    15·1 answer
  • In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many
    5·1 answer
  • What would be the mass, in grams, of 1.505 x 1023 molecules of carbon disulfide?
    5·1 answer
  • I need help, ACTUAL ANSWERS PLEASE
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!