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
kodGreya [7K]
3 years ago
8

A scientist is studying a cross between plants that are heterozygous (Xx) for a certain trait. She will use a table similar to t

his one to make a Punnett square for the cross.
Which percentage of offspring will most likely have the genotype represented by the letter A in this table?
0%
25%
50%
75%

Biology
2 answers:
Inga [223]3 years ago
9 0

Answer:

Option B, 25\\ %

Explanation:

The heterozygous genotype of the parent is Xx

The punnet square for the cross between the two parents having Xx genotype is  

X x

X XX Xx

x Xx xx

Thus,  

A represents the genotype – XX

B represents the genotype – Xx

C represents the genotype – Xx

D represents the genotype – xx

Out of four possible genotypes, XX (A) appears only once.

Thus the probability of occurrence of genotype A (XX) will be  

\frac{1}{4} * 100\\= 25\\ %

ivanzaharov [21]3 years ago
7 0
HM I THINK ITS B 25%
You might be interested in
Which molecular activity requires a folded structure?
Mice21 [21]

B -  Because an active cell can only work if it has a 3-Dimension structure.

7 0
3 years ago
In coastal areas, wind moves sand, blowing away or engulfing the soil, and eventually creating sand dunes
fomenos
In physical geography<span>, a </span>dune<span> is a </span>hill<span> of loose </span>sand<span> built by </span>wind<span> or the flow of water.</span><span> Dunes occur in different shapes and sizes, formed by interaction with the flow of air or water. Most kinds of dunes are longer on the windward side where the sand is pushed up the dune and have a shorter "slip face" in the lee of the wind. The valley or trough between dunes is called a </span>slack<span>. A "dune field" is an area covered by extensive sand dunes. Dunes occur, for example, in some </span>deserts<span> and along some coasts.</span>
4 0
3 years ago
Read 2 more answers
What’s a watt?
vfiekz [6]

Answer:

a. unit of power

8 0
3 years ago
Many useful products, mainly for medical purposes, are produced by cloning human genes into other organisms, which then mass-pro
ANEK [815]

Answer:

The correct answer is : A.

Explanation:

  • This is because of the following reasons:
  1. Escherichia coli is a bacteria and hence is a prokaryote.
  2. The cloning of human (eukaryote) genes is done to obtain in-vitro protein expression which are to be used a pharmaceutical compounds.
  3. Although the phenomenon of Central Dogma takes place in both Prokaryotes and Eukaryotes, the mechanism is very different.
  4. Some of the differences includes:
  • Eukaryotic genes contain certain non-protein encoding sequences called the Intron sequences which needs to be removed from the transcribed mature mRNA by Spliceosome. This phenomenon is absent in prokaryotes as they do not possess introns. Hence, proper processing of eukaryotic mRNA is not possible in prokaryotes.
  • The mature eukaryotic mRNA has a 5' cap and 3' polyadenylated tail which is added by a capping enzyme and a poly-A polymerase enzyme to increase their stability. This will not be possible in a prokaryote as they lack these enzymes.
  • The translation of membrane proteins and secretory proteins is carried on by the ribosomes bound to the endoplasmic reticulum. This structure is absent in prokaryotes, hence they will be unable to produce a proper polypeptide sequence.
  • Finally, the eukaryotic proteins undergo various modifications after formation, like methylation, acetylation, etc. These reactions cannot be carried out in a prokaryote as they lack the respective enzymes.
  • Hence, we see a properly folded functional eukaryotic protein cannot be produced in a prokaryote.

6 0
3 years ago
Cell theory states that all living things contain one or more cells. Why do you think cell theory meets the definition of
yanalaym [24]

Answer:

The correct answer is "yes it satisfies the definition of the scientific law"

Explanation:

The scientific theory states the verified explanation of the natural world. This things or the experiments can be determined by repeatedly testing by the given scientific methods. The cell theory also meets the definition of the very known scientific theory as it has also helped in determining it by various experiments as well as the observations. The cell can be studied under the microscope by the basic staining procedures that has already been mentioned in the theory.

3 0
3 years ago
Other questions:
  • Which trigonometric functions have asymptotes?
    15·1 answer
  • Which is a biotic factor operating within an ecosystem?
    6·1 answer
  • Which characteristic is necessary for natural
    5·1 answer
  • What type of organism converts nitrogen into a usable form for plants? A) bacteria B) earthworms C) fungus D) mold
    11·2 answers
  • The method by which new genes can be acquired by successive generations:
    11·2 answers
  • during replication, DNA _____. a. remains intact b. makes rna c. is copied d. directs protein synthesis
    9·2 answers
  • Hi! My name is Sadie I'm 14, (15 tomorrow X3) Uh this isn't really about school.. But i'm highly concerned.. As you know I'm 14,
    7·2 answers
  • Explain why the following statement is true : plants play a crucial role in the lives of other organisms, including humans.​
    8·1 answer
  • An explanation for behavior must be __________ and __________ to be considered a scientific theory. A. Repeated. . . Recorded B.
    5·1 answer
  • Why does carson think that living things cannot adapt to overcome the new chemicals that human beings introduce to the natural w
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!