Can someone please help me?

Anyone good at Biology could you give me a helping hand please!

andriy [413]

1. Anaphase. In Anaphase the sister chromatids separate from each other to the opposite sides of the cells.

2. Chromosomes would not separate into two nuclei. Mitosis is a process cell division, where one cell divides into two identical cells.

3. Metaphase I. Meiosis prophase I is the phase in which chromosomal crossing over occurs. The phase after prophase I is metaphase I.

4. Its body cells would have 36 chromosomes, and its gametes would have 18 chromosomes. In the gametes, there are half of the number of chromosomes present in the body cell.

5. A species has to adjust rapidly to a changing environment. To adjust to the environment, crossing over is necessary, and it does not occur in mitosis, but meiosis.

6. 50 percent.
Parents: Yy x yy
Offspring: Yy Yy yy yy
50 % is Yy and 50% is yy.

7. One parent had white eyes and the other was heterozygous for eye color. The ratio in the offspring is 50-50. The only possibility is the following:
Parents: Rr x rr
Offspring Rr Rr Rr Rr

8. Their fur will be a mixture of red and white hairs. The offspring will be heterozygous. They will have alleles for both red and white hairs and both will be expressed.

9. Not enough information.

10. Both of the parents' genotype must have been Pp. The genotype of the white plant is pp since it is recessive:
Parents: Pp x Pp
Offspring: PP Pp Pp pp
One of the four is white.

4 0

3 years ago

There are 258 g of MgCl2/liter. What is the molarity of the solution?

Zolol [24]

Taking into account the definition of molarity, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

<h3>Definition of molarity</h3>

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity= number of moles÷ volume

<h3>Molarity of the solution in this case</h3>

In this case, you know that the molar mass of MgCl₂ is 95.21 g/mole [molar mass is the amount of mass that a substance contains in one mole.]

You can apply the following rule of three: If by definition of molar mass 95.21 grams are contained in 1 mole, 258 grams are contained in how many moles?

amount of moles= (258 grams× 1 mole)÷ 95.21 grams

amount of moles= 2.7098 moles

Replacing in the definition of molarity:

258 g of MgCl₂/liter= 2.7098 moles of MgCl₂/liter

Finally, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

Learn more about molarity:

brainly.com/question/9324116

brainly.com/question/10608366

brainly.com/question/7429224

#SPJ1

3 0

1 year ago