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
Ivenika [448]
3 years ago
6

Draw a chart showing the crossing between red and white flowered pea plants till F2 generation. Find out the genotypic and pheno

typic ratio of F2 generation. When the mating of black and white rats takes place, all the offspring produced in first generation are black. Why there are no white rats?
Computers and Technology
1 answer:
adelina 88 [10]3 years ago
3 0

Answer:

part 1

F1 cross -

RR * rr

Rr, Rr, Rr, Rr

F2 Cross

Rr * Rr

RR, Rr, Rr, rr

Part 2

Black is dominant over white

Explanation:

Let the allele for red color trait be R and white color trait be r

Red is dominant over white

Genotype of true breeding parents

Red - RR

white - rr

F1 cross -

RR * rr

Rr, Rr, Rr, Rr

All the offspring are red and of genotype Rr

F2 Cross

Rr * Rr

RR, Rr, Rr, rr

RR: Rr: rr = 1:2:1

Phenotype ration

red (RR, Rr) : white (rr)

3:1

part 2

Black is dominant over white

hence, in first generation cross all mice become white

You might be interested in
Randall is unhappy because the server at his college blocks some emails with attachments, so he is unable to receive a particula
tatiyna
If the school has age restrictions it can read 18+ content but it depends on the school. Viruses as by my past experiences with friends can transfer from anywhere to another place because it disables security connections.

The answer is A.
8 0
3 years ago
Read 2 more answers
Lola wants to install an add-in in Excel.She has to unblock the add-in to allow Excel to open the add-in file automatically.To d
ololo11 [35]

Answer:

The correct answer is:

Properties (D)

Explanation:

First of all, option D (Properties) is the option that makes the most sense in this scenario, because the other options: Copy, Delete, and Rename are unrelated commands to what is to be achieved.

Secondly and more practically, an add-in file may not load in excel, and most of the time it is blocked by default and has to be unblocked. The following steps are used:

1. close Excel if it is open

2. open the folder where the add-in file is located, right-click on the add-in file, and select "properties"

3. a display tray will appear, having the attributes: Read-only, Hidden, Advanced, and unblock. Click the checkbox against "unblock" and make sure it is checked.

4. click Apply and Click Ok

Voila, your add-in file is unblocked.

<em>N:B The Images are for steps 2 and 3</em>

5 0
3 years ago
Animal wisdom/ the last wolf .compare and contrast the overall feeling of each poem
masha68 [24]
List the poem please. I won’t be able to answer without it.
3 0
3 years ago
GIVING BRAINLIEST ANSWER CORRECTLY! 20 POINTS
chubhunter [2.5K]
To understand how the code can be improved
7 0
3 years ago
The month of February normally has 28 days. But if it is a leap year, February has 29 days. Write a program that asks the user t
Vlad [161]

Answer:

// here is code in java.

import java.util.*;

// class definition

public class Main

{

// main method of the class

public static void main(String[] args) {

    // scanner object to read input from user

    Scanner s=new Scanner(System.in);

      // ask user to enter year

       System.out.print("Enter the year:");

       // read year

      int inp_year=s.nextInt();

      // check the leap year

      if(((inp_year % 4 == 0) && (inp_year % 100!= 0)) || (inp_year%400 == 0))

      {

      // print the day in the February of leap year

          System.out.println("Year "+inp_year+" has 29 days in February.");

      }

      else

      System.out.println("Year "+inp_year+" has 28 days in February.");

}

}

Explanation:

Read year from user and assign it to variable "year" with scanner object. Check the entered year is a leap year or not. A year is divisible by 100 and then check if it divisible by 400. If both condition is true then year is leap year.If year is not divisible by 100 and divisible by 4 then also it is a leap year. if year is leap then there will be 29 days in February of that year. Else there will 28 days in the February.

Output:

Enter the year:2000

Year 2000 has 29 days in February.

Enter the year:2002

Year 2002 has 28 days in February.

4 0
3 years ago
Other questions:
  • Identify which portion of the below host IP addresses are invalid and explain why it is invalid. Hint: If you aren't sure, conve
    12·1 answer
  • Clunker Motors Inc. is recalling all vehicles from model years 1995-1998 and 2004-2006.Given a variable modelYear write a statem
    5·1 answer
  • Which of the following is a true statement about psychological tests administered by computers? computers make standardization e
    9·1 answer
  • Look at the top 3 banking activities done via mobile banking vs. online banking. What characteristics do you notice for both?
    9·1 answer
  • Create a class called Home that contains 4 pieces of information as instance variables: county (datatype string), street (dataty
    5·1 answer
  • What is the main role of LDAP?
    14·1 answer
  • Which of the following inputs help robotic vacuum cleaners maneuver around obstacles?
    13·2 answers
  • How would you define media literacy?
    12·1 answer
  • What is the comment marker in Python? ("character marker" means the sequence of characters that indicates the beginning of a com
    6·1 answer
  • What will be the output of following python code? a,b=3,4 a,b,c=b,a+3,b-1 print(a,b,c)​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!