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Soloha48 [4]
2 years ago
9

Homologous chromosomes may exchange segments; this is called crossing over. Crossing over increases genetic variability. When do

es crossing over occur?
Question 2 options:


Meiosis II



Mitosis



Both mitosis and meiosis--crossing over may occur at any time during the cell cycle.



Meiosis I


Question 3

In order for meiosis to create four, genetically different gametes, DNA replication must occur. Which of these best describes when DNA replication would occur?


Question 3 options:


prior to meiosis II



prior to meiosis I and meiosis II



prophase I in meiosis I



prior to meiosis I

Question 4 (1 point)
The embryo's development as seen here represents which processes in the development of any multicellular organism?


Question 4 options:

meiosis followed by mitosis.


mitosis and cell differentiation.


protein synthesis followed by meiosis.


meiosis and cell differentiation.

Question 5
Why do some organisms reproduce aseggsually?

Question 5 options:

To rapidly produce like offspring


To increase genetic diversity


To have a variety of offspring at the same time


To get rid of genetic problems while reproducing
Biology
1 answer:
Serhud [2]2 years ago
6 0

A) Crossing over occurs in : Meiosis I ( D )

B) DNA replication would occur : Prior to meiosis I and meiosis II ( B )

C) The embryo's development represents ; meiosis and cell differentiation ( D )

D) Some organisms reproduce aseggsually ; To rapidly produce like offspring

<h3>What is Crossing over and DNA replication</h3>

Crossing over involves the swapping of genetic materials, and it occurs in prophase I of meiosis before meiosis II the crossing over of genetic materials are over. while DNA replication is the process whereby DNA make an exact copy of itself during the process of cell division and this process occurs prior to meiosis I and meiosis II

The development of an embryo in the missing diagram represents meiosis and cell differentiation.

Hence we can conclude that the answers to your questions are as listed above.

Learn more about Homologous chromosomes :  brainly.com/question/8253366

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Pani-rosa [81]
I think it’s frameshift, sorry if it’s wrong though I’m not sure
7 0
3 years ago
How do the various characteristics of animal skulls indicate the importance of one sense over another?
Nadusha1986 [10]
Animal skulls are said to protect the one of the most important organ in the body. Moreover, the bone has also some features that are important such as being able to identify the organ of the animal, knowing somehow the lifespan, diet and other similar biological traits.

Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
8 0
3 years ago
Which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts?
Zolol [24]

Mitochondria and chloroplast have similar DNA, which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts.

According to the endosymbiotic theory, a chloroplast and a mitochondria were the independent prokaryotes. Both can be ingested by a large prokaryote and resist digestion. As a result, they continued as endosymbionts and eventually lost some of their autonomic properties. They divide by binary fission, have their own genetic material, possess 70s ribosomes, and Both include their own transcriptional and translational machinery.

Therefore, considering endosymbiotic origin theory, Both Mitochondria and chloroplast have similar DNA is not a piece of evidence.

Learn more about endosymbiotic origins theory here

brainly.com/question/771962

#SPJ4

6 0
2 years ago
What does the biological species concept use as the primary criterion for determining species boundaries?
Marysya12 [62]

Answer:

The correct answer is C) gene flow

Explanation:

The biological species concept defines what is a species. It says that a species is a group of individuals in a population that interbreed with each other. So there should be gene flow between the members of the population to come under species.

Appearance does not define that two individual are of same species because even different species can look same for example Western meadowlarks and eastern meadowlarks looks identical to each other but they do not interbreed so there is no gene flow between them so they are not same species.  

Therefore the primary criteria for determining species boundaries is gene flow.

4 0
3 years ago
During which phase of the moon do neap tides occur? full gibbous new quarter
ahrayia [7]

Answer:

The answer would be D my friend.

Explanation:

Hope this helps. Good luck and have a great day!!

4 0
2 years ago
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