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
ale4655 [162]
3 years ago
12

In meiosis, what makes up a tetrad

Biology
2 answers:
jeyben [28]3 years ago
5 0
A tetrad consists of 2 homologous chromosomes each of which is made up of 2 sister chromatids

Veseljchak [2.6K]3 years ago
3 0

Answer:

Two homologous chromosomes paired together, each of which has two sister chromatids.

Explanation:

Zygotene stage of prophase I of meiosis I is characterized by the pairing of homologous chromosomes with help of synaptonemal complex. Since DNA replication has occurred in S phase, each chromosome in the pair contains two sister chromatids.  

So, the chromosome pair appears to have a total of four chromatids and the structure is termed as "tetrad".

You might be interested in
Based on your experimental results, categorize each microbe as preferring isotonic environments, being halotolerant, or as a hal
NISA [10]

The microbes present in the experiment were:

S. cerevisiae

S. epidermis

A way of categorizing microbes is according to the environment that they need to live in. In other words, we can classify them as isotonic, halotolerant and halophile.

If we put these two microbes in solutions of increasing concentrations, 1%, 7% and 15%, we will see that:

  • S. cerevisiae only grows when it is in a 1% solution.
  • S. epidermis only grows when it is in a 1% and 7% solution.

In conclusion, S.cerevisiae prefers an isotonic environment. S. epidermis is halotolerant since it can grow in a more hypertonic environment. As none of them grows in a highly hypertonic solution, neither of them are halophile.

Learn more at:

brainly.com/question/12165361

4 0
2 years ago
How many grams of potassium nitrate (KNO3) would form if 2.25 liters of a 1.50 molar lead nitrate Pb(NO3)2 solution reacts with
nekit [7.7K]
First we must understand the balanced chemical equation:
Pb(NO3)2 + K2CrO4 ==> PbCr04 + 2KNO3

This shows us that two moles of potassium nitrate are formed from 1 mole of lead nitrate or potassium chromate solution. The next step is to find out how many moles of each reactant there are. Note the word Molar is a concentration that simply means moles per liter.

2.25L of 1.5M lead nitrate = 2.25x1.5 = 3.375 moles of lead nitrate
1.15L of 2.75M potassium chromate = 1.15x2.75 = 3.1625 moles

The important part here is to see that the number of moles of the reactants are different. We know the number of moles of products will be dependent on the number of moles of reactants, and in this case there is less potassium chromate than there is lead nitrate, so this is the limiting factor as there is a one to one relationship with both reactants. Therefore, the number of moles of potassium nitrate produced is 2 x number of moles of potassium chromate. i.e. 6.325 moles of potassium nitrate is liberated.

To work out the number of grams, we must find the molar mass (the mass of one mole) of KNO3, which is the sum of the molar mass of each of its component atoms that make up the molecule. I've looked this up as 101.1 grams per mole.

Now we simply times the molar mass by the number of moles to yield the final grams liberated: 6.325 moles  x 101.1 grams/mole = 639.4 grams of potassium nitrate is liberated from this reaction.
7 0
3 years ago
Read 2 more answers
True or False? Buoyant forces act on objects that are only floating in air.
Marizza181 [45]

Answer:

False

Explanation:

Buoyant forces act on objects that are submerged in fluids. This includes gases and liquids.

6 0
3 years ago
How do adaptations help Ann organism to reduce competition for food and other resourses
Gre4nikov [31]
An organism adapting to its environment leads it to be more ‘equipped’ for survival.
Competition is when other species fight for the same resources that another species needs. Also, it would produce offspring with these adaptations.

An example (to help you better understand);

A blue jay has great eyesight, strong wings, and sharp beak. (Better adapted organism) Another blue jay has great eyesight, weak wings, and dull beak. (The competitor/unadapted)

Both birds find the same food source and are now competing for it. The first bird has sharp beams, which is better for breaking, and ‘chomping’ the seeds/food. The second bird would struggle to consume its food (seed) unless it’s worms.

So which one is better adapted? The first blue jay.

And i hope this helped show how competition can be reduced.
5 0
3 years ago
The brain contains ________ of interconnected neurons and glia
Alex787 [66]

The brain contains billions of interconnected neurons and glia. <span> Glia cells</span><span> enclosed the  neurons and provide support for and insulation between them. It  is also the most abundant </span>cell types in the central nervous system. While Neurons are the basic units of the nervous system and it is the most important part is the brain. 

<span> </span>

6 0
3 years ago
Other questions:
  • Which of the following is a necessary trait of a good hypothesis?
    15·1 answer
  • What type of wave do ocean waves represent
    6·2 answers
  • What stood atop a covered chemical waste dump at Love Canal, New York?
    9·2 answers
  • Why are organisms classified? 
    9·1 answer
  • Study this image which statement best describes the rock shown check all that apply
    13·2 answers
  • Which best explains how the body maintains homeostais?
    11·2 answers
  • The side chain of ________ has a pKa in the physiological pH range and is therefore often involved in proton transfer during enz
    5·1 answer
  • Write a chemical equation for cellular respiration. Label the molecules involved. <br><br> Help!
    8·1 answer
  • The cross Lpq/lPQ x lpq/lpq is carried out and the L gene is found to be in the middle. what would be the geneotype of the doubl
    9·1 answer
  • Pregunta urgente ¿Que son horiciones? No se si es de biología o de ciencias
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!