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9966 [12]
3 years ago
5

Why does meiosis and mitosis Involves DNA and Chromosomes

Biology
1 answer:
Phantasy [73]3 years ago
3 0

Answer:

Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. ... Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes.

Explanation:

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Tropical rainforests have the greatest biodiversity of any type of land ecosystem how does biodiversity contribute to the sustai
Shtirlitz [24]

Answer:its j all of the above

Explanation: because all of them have great sustainabilty

6 0
2 years ago
Sickle cell anemia is produced by a genetic defect in the amino acid sequence of hemoglobin. Persons who are homozygous for this
JulijaS [17]

Answer:

The probability is 1/2

Explanation:

Heterozygous for sickle cell allele is AS

Homozygous allele is SS

AS SS

The offspring formed include

AS, AS, SS, SS

The probability of their children being carriers include

Number of AS/ Total number of offspring

= 2/4 =1/2 or 0.5

8 0
3 years ago
The half — life of nickel is 96 years. How much of a 30-gram sample is left after 270 years?
-Dominant- [34]

The amount of the 30 gram-sample that will remain after 270 years is 6.61 grams

<h3>How to determine the number of half-lives </h3>

We'll begin by obtaining the number of half lives that has elapsed. This can be obtained as follow:

  • Half-life (t½) = 96 years
  • Time (t) = 270 years
  • Number of half-lives (n) =?

n = t / t½

n = 270 / 99

n = 2.8125

<h3>How to determine the amount remaining </h3>
  • Original amount (N₀) = 30 grams
  • Number of half-lives (n) = 2.8125
  • Amount remaining (N) =?

The amount remaing can be obtained as follow:

N = N₀ / 2^n

N = 30 / 2^2.8125

N = 6.61 grams

Learn more about half life:

brainly.com/question/26374513

#SPJ1

5 0
1 year ago
What is the primary source of energy for all food chains?
Darya [45]

Answer:

sunn

Explanation:

this is my alt acc

7 0
3 years ago
The small intestine begins with the _____ and ends with the ___
weeeeeb [17]

The answer is it begins at the PYLORIC SPHINCTER and ends at the ILEOCECAL SPHINCTER. The pyloric sphincter is a group of smooth muscle at the joint between the pylorus of the stomach and the duodenum of the small intestine. It plays a vital role in digestion, where it acts as a valve to controls the flow of moderately digested food from the digestive to the small intestine. Ileocecal is a sphincter muscle valve that split up the small intestine and the large intestine.

7 0
3 years ago
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