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
sp2606 [1]
3 years ago
15

Two sister chromatids are joined at the centromere prior to meiosis. Which statement is correct? a. These chromatids make up a d

iploid chromosome. b. Barring mutation, the two sister chromatids must be identical. c. The cell that contains these sister chromatids must be haploid.
Biology
1 answer:
kirill115 [55]3 years ago
6 0

Answer:

b. Barring mutation, the two sister chromatids must be identical.

Explanation:

Prior to meiosis, the DNA is replicated so cells enter division with all its chromosomes having two sister chromatids united at the centromere.

DNA replication is semiconservative: the original DNA strands are separated and new strands are synthesized using the original ones as templates. As a result, each sister chromatid is made of one original DNA strand and a newly synthesized DNA strand, and both should be identical to each other.

You might be interested in
The ______ heat added, the _______ the reaction will take place.
garri49 [273]

Answer:

A. <u>more</u><u>;</u><u> </u><u>faster</u><u> </u>

Explanation:

<em>I</em><em> </em><em>think</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em>

6 0
3 years ago
Read 2 more answers
Which statement best explains why the atmosphere is considered an open system?
katovenus [111]
The answer is B

An open system has its energy and matter leave and enter the system's boundaries unlike in a closed system where energy remains within the system.
The earth's atmosphere shares heat and water vapor with the hydrosphere (oceans, seas and lakes), energy form the sun, in the atmosphere and then partly radiated back to space
5 0
3 years ago
Read 2 more answers
How does over-irrigation lead to salinization?
Elena-2011 [213]

Answer:

Salinity from irrigation can occur over time wherever irrigation occurs, since almost all water (even natural rainfall) contains some dissolved salts. When the plants use the water, the salts are left behind in the soil and eventually begin to accumulate

Explanation:

6 0
3 years ago
Which cell should be classified as prokaryotic?
kykrilka [37]
A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism

There are differences between Eukaryotic and Prokaryotic cells. This difference is considered to be the most important distinction between groups of organisms. A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today. 
A Eukaryotic cell contains a nucleus; more than one chromosome and is typically a multi-celled organism.  Both plant and animal cells are eukaryotic cells.

8 0
3 years ago
Read 2 more answers
________are made by looking at the result of a behavior or occurrence.
EleoNora [17]
Your answer is
B. Direct observation
3 0
4 years ago
Read 2 more answers
Other questions:
  • By looking at a picuture how can you tell if it is mitosis or meiosis
    12·1 answer
  • a. Discuss one situation when you would use wormbase first? b. Discuss one situation when you would use OMIM first? c. Discuss o
    13·1 answer
  • Why do you need a global perspective when planning for sustainable energy?
    5·1 answer
  • Match the terms to their definition. 1. chromosome a cell whose nucleus is not bound by a membrane 2. eukaryote a genetic charac
    12·1 answer
  • What effect might many years of low precipitation have on water supply?
    9·1 answer
  • If these protections are lost and the grizzly bears are hunted to extinction would that increase or decrease the biodiversity of
    11·1 answer
  • What is a chemical reaction?Explain this in terms of reactants,products,conservation of mass,and biosynthesis.
    7·1 answer
  • Nucleic acids _____.
    5·1 answer
  • Space probes can
    12·1 answer
  • Why are beaver ponds so valuable in drought years?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!