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katen-ka-za [31]
4 years ago
12

During prophase 1 of meiosis, crossing over between the sister chromatids occurs. What is the purpose of this process

Biology
1 answer:
AleksandrR [38]4 years ago
5 0

Crossing over can lead to an abnormal genome if the exchange is not done equally, which can lead to an in-utero death or congenital diseases.

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Help please 20 points i mark u as brainlist
Artyom0805 [142]

Answer:

a. Mastication process and formation of bolus in the oral cavity

b. The contraction in the stomach breaks the food down into smaller pieces. These pieces are then moved to the small intestine.

c. In the small intestine, food particles are broken down into nutrients, fat, protein and carbohydrates which are absorbed into the bloodstream.

Explanation:

a. First step of digestive system functioning is the mastication process and formation of bolus in the oral cavity.

b. The contraction in stomach, with the help of digestive enzymes and acids, break the food down into smaller pieces. The small pieces of food are then released into the first part of the small intestine (duodenum).

c. In the small intestine, two enzymes released from pancreas and gall bladder break down the food particles into fats, proteins, and carbohydrates. Thereon, nutrients and carbohydrates, proteins and fats are absorbed into the bloodstream.

5 0
3 years ago
Which is part of the theory of evolution by natural selection all animals in a <br>population​
Anika [276]

Answer:

What are the 4 stages of natural selection?

The Process of Natural Selection

Variation. Organisms (within populations) exhibit individual variation in appearance and behavior. ...

Inheritance. Some traits are consistently passed on from parent to offspring. ...

High rate of population growth. ...

Differential survival and reproduction.

Explanation:

4 0
3 years ago
Help me pleaseeee!!???
umka21 [38]

Answer:

it A

Explanation:

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3 0
3 years ago
What are some types of scientists?
Lostsunrise [7]

Answer:

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8 0
3 years ago
A cloud directly above you is about 10° across. From the weather report, you know that the cloud is at an altitude of 2200 m. Ho
Vikentia [17]

The width of the cloud is : 384 m

<u>Given data :</u>

Cloud altitude = 2200 m

Temperature = 10°

<h3></h3><h3>Determine how wide the cloud is </h3>

applying the equation below

I = d(\frac{\alpha }{57.3})

where : I = linear size , d = 2200 m ,  \alpha  = 10^{o}

therefore :

I = 2200 ( 10 / 57.3 )

 = 383.94 m

 ≈ 384 m

Hence we can conclude that the width of the cloud is : 384 m

Learn more about linear size : brainly.com/question/1048150

7 0
2 years ago
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