16. A diploid cell has 30 chromosomes. How many chromosomes are present in each cell during
prophase I of the meiotic cycle?
A. 15
B. 30
C. 45
D. 60
E. 120
17. A diploid cell has 42 chromosomes. How many chromosomes are present in each cell during
metaphase II of the meiotic cycle?
A. 168
B. 84
C. 63
D. 42
E. 21

Answers

Answer 1
Answer:
16. B
17. E
Explanation:
16. During prophase I of meiosis only crossing-over occurs. The cells do not halve.
17. The cells split into 2 at the end of telophase I. They'll only split into four at the end of telophase II so during metaphase II there will be only two cells each containing of 21 chromosomes.

Related Questions

How could you tell whether a given sequence was DNA or mRNA?
Was it easier to decode messages written in DNA or in mRNA sequences?
Which cellular enzymes or machines are you imitating when you "transcribe" DNA into mRNA?
Which cellular enzymes or machines are you imitating when you "translate" mRNA into a chain of amino acids?
What else needs to happen in a eukaryotic cell between the processes of transcription and translation?
In step 5, how did different mutations affect the amino acid sequence that was encoded?
Explain why some single nucleotide mutations affect an amino acid sequence and some single nucleotide mutations do not.
Explain why nucleotide insertions and deletions affect the amino acid sequence so profoundly.
Why could your secret message include only 20 of the 26 letters of the alphabet?
Did you find that it was difficult to work with only these letters?

Answers

Answer:

1. You could tell whether a given sequence was DNA or mRNA because of Uracil and Thymine base differences in both

2. Answers may vary up to you, but messages are easier to decode written in DNA

3. You are imitating RNA polymerases.

4. You are imitating RNA polymerase once again

5. The RNA strand is delivered to start the process of translation; RNA>>Protien

6. Different mutations affect different amino acid sequences because they alter the code which makes it un-easy to decode the sequence

7. Some single nucleotide mutations affect an amino acid sequence depending on what mutation it is causing. Some single nucleotide mutations do not do this because they aren't as severe and they don't cause codons to mix up.

Answer:

1

ADNA sequences use the nucleotides A, T, G, and C, while mRNA          sequences use the nucleotides A, U, G, and C.

B It was easier to decode the messages written in mRNA sequences     because these sequences could be translated directly into the amino acid sequence.

2

A The cellular enzyme that carries out transcription is RNA polymerase.

B The cellular machine that carries out translation is the ribosome, which is composed of both rRNA and ribosomal proteins.

C In a eukaryotic cell, an mRNA transcript often has additional untranslated regions and a poly-A tail. A eukaryotic mRNA transcript would need to be transported from the nucleus to the cytoplasm before it could be translated.

3

A   Some amino acids are encoded by several codons. If a single nucleotide mutation still encodes for the same amino acid, the resulting amino acid sequence would not be affected. This happens most often with nucleotides in the third position of a codon.

B   If a single nucleotide mutation changes the amino acid encoded, the resulting amino acid sequence would be affected. This happens most often with nucleotides in the first and second positions of a codon.

C   Nucleotide insertions and deletions cause frameshift mutations, which change the reading frame of translation and will encode completely different amino acids from that point forward.

4

A   There are only 20 canonical amino acids, so the letters B, J, O, U, X, and Z are not used as one-letter codes.

B   It was a little difficult to not use the letters B, J, O, U, X, and Z at first, but there are messages to write without these six letters.

Explanation:

Mental activity is really centered around
4BB.
What does 4BB stand for?
A. 4 Building Blocks
B. 4 Brain Books
C. 4 Best Beats

Answers

4 brain books! hope that helps

What’s the latitude and longitude of Canary Island hotspot?

_______N _________W

Answers

Answer:

Latitude 28.291565

Longitude -16.629129

The picture shows a scientist collecting data from an ice core: What kind of data can be collected from ice cores to learn about past climates?

A. humidity

B. air pressure

C. amount of carbon dioxide in the air

D. ocean surface temperature

Answers

Ice core can tells various information regarding the atmosphere. It can reveal the temperature, precipitation, and other atmospheric conditions. Here in the image, the scientists can learn about the ocean surface temperature, i.e., option D.

What is an ice core?

Ice cores are ice-drilled cylinders made from ice sheets and glaciers.

They are capsules that are frozen and allow scientists to reconstruct climate far into the past.

It can be used to detect the ocean surface temperature.

Thus, the correct option is D.

For more details regarding ice core, visit:

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Question 9 of 10
Sound wave A has a higher pitch than sound wave B. What must also be true
of these two waves?
O A. Wave A has a higher frequency than wave B.
B. Wave A has a lower frequency than wave B.
C. Wave A is softer than wave B.
O D. Wave A is louder than wave B.

Answers

Answer:

wave A has a higher frequency then wave b

Explanation:

test

The true statement regarding the two sounds is  Wave A has a lower frequency than wave B. Thus, option "B" is correct.

What is the pitch of a sound?

The pitch of a sound is the sensation of the sound frequency.

A high pitch sound corresponds to a high-frequency sound wave and a low pitch sound corresponds to low frequency.

Sound of the same amplitude has the same loudness.

Thus, option "B" is correct.

Learn more pitch of sound here:

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Use the drop-down menus to complete each sentence.
А
is an organism that eats other organisms to gain energy, it is also called
A
v is an organism that makes its own food; it is also called
v is an organism that breaks down waste and dead organisms.
А

Answers

Answer:an organism who make its own food is autotrophic

Explanation:

(plate tectonics) HELP PLEASEE​ ILL GIVE BRAINLIEST

Answers

Answer:

Plate tectonics is the theory that Earth's outer shell is divided into large slabs of solid rock, called “plates,” that glide over Earth's mantle, the rocky inner layer above Earth's core. Earth's solid outer layer, which includes the crust and the uppermost mantle, is called the lithosphere.

(ONLY ANSWER IF YOURE GOOD AT SCIENCE, NO SPAM!!) Bacteria play many roles in nature. How do they affect us? From the list below, select all of
the choices that correctly describe roles of bacteria.
Select all that apply.
A aiding with digestion in the human gut
helping plants obtain nitrogen
с
breaking down decaying matter
D
causing human disease
E producing true tissues
F
forming true organs
being genetically engineered to produce products

Answers

Answer:

A, C, D (as far as I know, however I might have missed something or added something)

What is the largest source of water on Earth?
A.Seawater
B.Freshwater
C.Groundwater
D.Frozen water

Answers

Groundwater is one of the largest source of water on Earth.

B. What are two reasons that this layer can contain so much water vapor? (2 points)

Answers

The two reasons that this layer ( Troposphere ) will contain much water vapor are :

AltitudeAir compressibility

The layer of the atmosphere with the most water vapor

The troposphere contains so much of the water vapor present in the atmosphere due to gravity and the compressibility air. As we move higher above the earth surface, the density of the atmosphere decreases rapidly. causing the majority of water vapor to be  retained at the troposphere. which is lowest part of the atmosphere closest to the earth surface.

Hence we can conclude that The two reasons that this layer ( Troposphere ) will contain much water vapor are : Altitude and Air compressibility.

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an example of a biotic factor in an ecosystem is

Answers

Answer:

abiotic factors are those which are non-living like physical conditions and chemical agents in the ecosystem.

Explanation:

A chemical property is determined by the following:
a. how it looks
c. how it feels
b. how it smells
d. none of the above

Answers

Answer:

Your answer is Option D. None of the above

Explaination:

Chemical Properties can be determined by Oxidation , Heat Combustion, How they react with other chemicals etc. While Physical properties include odor,taste,appearance,melting point,boiling point etc.

What is brodmann’s area number for primary sensory area and secondary sensory area

Answers

Answer:

HER IS THE answer

HOPE IT WILL HELP YOU

PLS MARK AS BRAINLIESTBRAINLIEST

What reacts with water in the atmosphere to form carbonic acid to make regular rainfall slightly acidic?

A: Carbon Dioxide
B: Lead
C: Helium
D: Argon

Answers

the answer is caebin diaxode

Answer:

A. carbon dioxide

Explanation:

what will happen to the temperature in your decomposition layer if decomposition actually occurs in your ecocolumn?

A: Stay the same
B: Increase
C: Stay exactly 75 degrees Fahrenheit
D: Decrease significantly

Answers

Explanation:

the temperature of that layer will increase.

GUYS PLS HELP , 20 POINTS
Which of the following describes initial data analysis?

clear hypotheses about the data are tested

concerned with avoiding answering the original research question

no clear hypothesis is stated before analyzing the data, and the data is searched for models that describe the data well

analyses aimed at answering the research question are performed as well as any other relevant analysis needed to write the first draft of the research report

Answers

Answer:

no clear hypothesis is stated before analyzing the data, and the data is searched for models that describe the data well

this is the answer

please help!!

** peptide bond picture is for 1 and 2**
1. In this CHEMICAL reaction, what happens to WATER?
a.water is not involved in this reaction in any way

b.water goes both "in/enters" and "out/exits" of the reaction

c.water goes "into" or "enters" the reaction

d.water comes "out of" or "exits" the reaction

2. In this METABOLIC reaction, what happens to ENERGY?
a.energy goes "into" or "enters" the reaction

b.energy is not involved in this reaction in any way

c.energy comes "out" of or "exits" the reaction

d.energy goes both "in/enters" and "out/exits" the reaction

3.Which pathway depicts transport of a hydrophobic molecule?

Answers

Answer:

1. d.water comes "out of" or "exits" the reaction

2. a.energy goes "into" or "enters" the reaction

3. Path A

Explanation:

1) Peptide bond synthesis is dehydration reaction which means water is "dehydrated" meaning released when the reaction occurs.

2) Anytime we want to join things together we gotta use energy, these processes are anabolic reactions such as making sugars, proteins, lipids, in our cell. Since we are making protein here, we need to put energy into the reaction.

3) Path A is hydrophobic b/c they directly diffuse thru cell membrane to attach to intracellular receptor.

My best attempt, hope its right.

ONLY ANSWER IF YOU KNOW!! NO SPAMS :)

Answers

Answer:

The answer is Mycellium.

Explanation:

Hope this helps! :)

Answer:

D

Explanation:

I'm pretty sure this is the answer

(Love your pfp btw)

Which statement is true about DNA? (1 point)

Answers

the answer is b because dna can be preserved in the remains of extinct organisms

Which of the following IS NOT a function of the skeletal system?
O Protecting the body from pathogens
O Producing blood cells
O Storing minerals
O Providing attachment

Answers

Answer:

A) Protecting the body from pathogens

HELPPP
4. What two variables are necessary to calculate population growth?
birth rate and death rate
Ogrowth rate and carrying capacity
Obirth rate and growth rate
growth rate and death rate

Answers

Answer:

Birth rate and death rate

Explanation:

Birth rate will decrease and death rate will fluctuate and they will balance the other out.

Definition for chemical formula.

Answers

A chemical formula is a mathematical equation set up in the form of symbols that expresses the elements and their proportions present in a compound.

name the type of inheritance shown by thes plants​

Answers

Answer:

Inheritance that can happen from these flowers (red and white) can make pink flowers by incomplete dominance. Where they appear to blend together by the definition of incomplete dominance.

ur welcome :)

correct me if i’m wrong

brainliest please?

Griffith injected with two different strains of bacteria in
his search for the genetic material.

Answers

Answer:

a. Mice

Explanation:

mice was used by Griffith in his investigation

47.
Base your answer to the question on the diagram below and on your knowledge of biology. The diagram represents
interactions between organisms in an ecosystem.
Species
D
Species
E
Species
A
Species
с
Species
B
Which statement correctly describes an interaction that contributes to the stability of this ecosystem?
A. Species E is not affected by the activity of species A.
B. Species B returns compounds to the environment that may later be used by species C.
C. Species C recycles nutrients from species B and D to obtain energy.
D. Species D is directly dependent on the autotrophic activity of species B.

Answers

An interaction that contributes to the stability of this ecosystem is: B. Species B returns compounds to the environment that may later be used by species C.

What is an ecosystem?

An ecosystem simply refers to a biological community that is made up of species of living organisms (biotic factors) and the physical environment (abiotic factors) in which they exist and all interact.

Based on the schematic diagram shown in the image attached below, we can logically deduce that an interaction which contributes to the stability of this ecosystem is that Species B returns chemical compounds to the environment that may later be used by species C.

Read more on an ecosystem here: brainly.com/question/15971107

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Which situation does NOT describe a function of the reproductive system?

ensures species survival

regulates the menstrual cycle

allows sperm and eggs to combine

Answers

Answer:

regulates the menstrual cycle

Explanation:

The other 2 answers are apart of the reproductive system

Answer the following question in the photo

Answers

Answer:

1.The father is able to roll the tongue because the allele for the ability to roll the tongue is dominant over the allele for the inability to roll the tongue

2.(BO) Father's Genotype

3.A maternal effect is a situation where the phenotype of an organism is determined not only by the environment it experiences and its genotype, but also by the environment and genotype of its mother.

4.The mother's genotype is AO

5.Within an individual organism, the specific combination of alleles for a gene is known as the genotype of the organism, and (as mentioned above) the physical trait associated with that genotype is called the phenotype of the organism

(the physical trait associated with that genotype)

Explain why clouds are more likely to form at higher elevations. (Use the terms relative humidity and dewpoint in your answer)

Answers

Answer & Explanation:

At higher elevations, water condenses from the air and produces clouds, which often blanket lofty peaks and completely obscure them. As the clouds get saturated with moisture, rain and snow fall. The precipitation, when combined with the strong winds, results in frequent stormy weather.

3During menstruation, the body sheds extra tissue from:
A Ovaries
B Fallopian tubes
C Fertilized eggs
D The uterus

Answers

the answer is the endometrium(lining of the uterus) so maybe D

Surface weather map

Please help

Answers

Answer:

the file is below

Explanation:

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