Biology Middle School

Why is it important that egg and sperm only have on set of chromosomes?

Answers

Answer 1

Answer:

Because when they combine the fertilized egg will have 46 chromosomes. The egg has 23 chromosomes and the sperm has 23 so adding them together is the 46 chromosomes the human body is supposed to have.

Explanation:

Answer 2
Because body cells are supposed to have 46 chromosomes! So the sex cells will have 23 so that when there nuclei fuse together the 23 chromosomes from the egg and the 23 chromosomes from the sperm will add together to leave you with 46! Just like a normal body cell
Hope it helps!!

Related Questions

Fossil evidence linking dinosaurs to birds was found in:

the La Brea Tar Pits
the Gobi Desert
Laggerstatten

Answers

Answer:

The Gobi Dessert

Explanation:

Plzzz answerrrrrr correctlyyyyy

Answers

I agree with this other guy slugs r rlly cool and it’s also B

Which of the following illustrates deductive reasoning?


All men are mortal. George is a man. Therefore, George is mortal.

Lisa leaves for school at 7:00 am and is on time. Lisa assumes she will always be on time if she leaves at 7:00 am.

Jane is a firefighter. All firefighters are friendly. Therefore, Jane is friendly.

All students taught by Mr. Wilson are right handed. Mr. Wilson assumes all students are right handed.

Answers

Answer:

A) all men are mortal

Explanation:

the others are inductive

Answer:

all men are mortal:

which of the following best describes what happens to objects that are white when they are exposed to visible light?

The energy must be reflected
The energy must be transmitted
The energy must be absorbed
The energy must be destroyed


Which of the following best describes what happens to objects that are black when they are exposed to visible light?
The energy must be reflected
The energy must be transmitted
The energy must be absorbed
The energy must be destroyed

Answers

When white objects are exposed to light the energy is reflected

When black objects are exposed the energy is absorbed
The answer c your welcome.

can someone please help me ill give brainlist if you answer any of them

Answers

Answer:

phytoplankton

scavengers are omnivores that eat dead plants or animals

Explanation:

hope this helps

The toad and d on the first one

How much of the bacteria in an adult’s intestine is E. coli?

Answers

Answer:

6

Explanation:

Bianconi E, Piovesan A, Facchin F, Beraudi A, Casadei R, Frabetti F

there is six so six is correct

Alicia volunteered to become an organ and tissue donor when she got her state ID. If Alicia dies, she can help to improve others’ lives. Her heart tissue, skin, bones, and veins can all be transplanted into a patient in need.

Choose the words that correctly complete the sentences.

A group of similar
Blank
make up a tissue. Several tissues make up an
Blank
.

Answers

Answer:

A group of similar cells make up a tissue. Several tissues make up an organ.

Explanation:

Answer:

Im sorry i have no clue i just need points so i can give out free points every monday

Explanation:

:)

List all of the recessive traits you noticed in the pictures.

Answers

Answer:

straight hair

attached ear lobes

no dimples

Explanation:

straight hair. attached ear lobes, not sure of the third

answer the question down below

Answers

Answer: 2) MERCURY

Explanation:

Ethanol has the lowest at 0.789 g/mL.

Mercury has the highest at 13.6 g/mL.

Benzene has is in the middle at 0.874 g/mL .

Mercury is the correct answer

Explain how the processes in the water cycle work together to maintain a constant amount of water on Earth.

Answers

There are 4 stages. Evaporation, precipitation, condensation, and run-off or collection. Since it is a cycle, all water goes through, and always comes back to the first stage of evaporation. In the water cycle, no water can be created or destroyed; it’s always there.
precipitation, evaporation, condensation, then all over again

precipitation is rain
then condensation is when water turns to like co
and evaporation is when water molecules go back up to the sky and all over again

FIRST CORRECT ANSWER GETS BRAINLIEST!

A siren and a newt are classified in the salamander family. What characteristics may have been used to group them?

Answers

Answer:

Long slender bodies, blunt snouts, and a tail.

Explanation:

A salamander is classified as an amphibian with lizard-like appearances, long body, slender body, blunt snouts, short protruding limbs, and a tail present in adults and tadpoles.

Newts have slender bodies, blunt snouts, and a tail.

Sirens have long bodies, blunt snouts, and a tail.

Hope this helps :)

Thx for da answer rlly appreciated

all uk to know is in photo

Answers

Answer:

Well it’s definit’ll not a or b

it’s not getting any warmer

hope this helps ^-^

Answer:

the answer is c. the amount of coffee is the same

Explanation:

i got this question right, have a nice day!

Which of the following statements is true?

When you scrape your knee, skin cells are replaced by meiosis.
Blood type is determined by a single gene.
The Punnett Square was invented by Gregor Mendel.
A puppy with Bb fur has the same phenotype as a puppy with BB fur.

Answers

Answer: Blood type is determined by a single gene.(I think) or When you scrape your knee, skin cells are replaced by meiosis.

Explanation: hope this help

Blood type is determined by a single gene is True.

What is gene?

Gene is the sequence of nucleotide that encodes the synthesis of a gene product.

Gene that codes for blood type are ABO gene present in the arm if chromosome 9. The gene of blood type has three alleles.

To know more about the blood type here

https://brainly.com/question/275815

#SPJ2

List all of the recessive traits you noticed in the pictures.

Answers

Answer:

mother and farther have no recessive traits

offspring mother

curly hair,curly hair

dimples,dimples

Explanation:

Recessive: straight hair, straight hairline, attached earlobe, no dimples, smooth twins . Remember dominant traits will show up over recessive

can someone help me please

Answers

Answer:c, c, b

Explanation:

Answer: C, C, B

Explanation:

What does it feel like when you're lonely? I'm asking you, please answer in your own words, this is for an experiment.

Answers

Answer:

How many times are you gonna ask? Imao

Explanation: when I’m in my room and no one is around to drown out my own noise, that’s when I feel the most lonely.

So it feels like SHlT

Answer:

when i feel lonely, it can depend on the situation whether its a sad lonely or a comforting one. if its sad, then i feel like theres nobody to go to or theres nothing to cheer me up. if its a comforting lonely, then i take that time to myself to be alone and not be sad about anything if you know what i mean

Explanation:

PLEASE HELP MEH

Which structure is represented by the X?


I think it might be C

Answers

The answer is the Trachea

Answer:

I believe it the trachea.

Explanation:

According too diagrams the very tip is the larynx and the bronchus is the peice that starts to sprout off. Im not a very good explainer but that what i got hope you get it right!

help me on this execises ( a lot of point for all answers)

Answers

1. heterozygous
2. fact because the color is passed down from the parents
3. This can happen because the trait is recessive and not dominate
4. A
5.A (i think)
6. traits are passed on through genes
The answer to number one is Heterozygous

Plz help will give brainlest if you do

Answers

Answer:

I'm pretty sure it's B

Explanation:

because when developing for housing where animal's live doesn't mean anything about them staying. They usually leave for a new home to find so they will descrease in numbers.

Answer:

answer c

Explanation:

animals might move to a new habitat or die

HELP PLZZZZ all u need to know is in picture

Answers

The answer to your question is Answers c and d in my opinion
i believe the answer is C.

look at the pic pls help

Answers

Answer:

Soo... Is that the answer you chose?

Explanation:

I think is correct.

i think the answer is the second one

Please I need help!!!

Answers

The layers are old and have cracks in it.
pretty sure the rocks are older than the fault line i don’t believe they are the same age

look at the pic!!!!!!!!!!!!!!!!! pls help

Answers

Answer:

D

Explanation:

Hello! Thanks braliest please

Tertiary succession

PLZ HELP ASAP PLZZZ I REALLY NEED DIS

Answers

I think you mean this and also b d a c e
This is abc de and also the cycle lasted

who allows the movement of bone

Answers

Synovial joints and muscular system
the muscular system, hope this helps!

Complete the following sentence.
If an implemented solution is ineffective, then the "
____________ solution" step must be reconsidered.

Answers

Answer:

effective i think

Explanation:

Mosquitoes can carry and transmit disease to animals and humans. Explain how the cricket frog plays an important role in limiting the spread of mosquito-borne illnesses like West Nile virus and malaria.
Predict the long-term effects of these limiting factors on the cricket frog population in the pond ecosystem.

Answers

The crickets and mosquitoes play an important role in limiting the spread of mosquito-borne illness like West Nile virus and Malaria because since the frogs eat mosquitoes the frogs eat them and decrease the number of mosquitoes so when the number of mosquitoes decreases the illness decreases too.

Hope this helps and you can add words or take out of the short paragraph I wrote above

The ocean is one of Earth’s biomes. A biome is an area that is characterized by the plants and animals that live there. There are five major oceans—the Atlantic, Pacific, Indian, Arctic, and Southern—that are all connected in what is known as the World Ocean. The ocean, sometimes called the marine biome, is huge, covering 70% of the Earth’s surface. However, humans have only explored about 5% of it. Scientists know less about the ocean than they do about the dark side of the moon. In this way, the ocean is considered the Earth’s final frontier.

Which of the following is true?

A
The Atlantic, Pacific, Indian, Arctic, and Southern Oceans are completely separate from each other.

B
The ocean covers about half of the Earth’s surface.

C
Scientists have studied most of the ocean, but a tiny bit remains unexplored.

D
Scientists know more about the moon than they do the ocean.

Answers

The answer would be B it could be D but I think it’s most likely B

The statement that scientists know more about the moon than they do about the ocean is true. Therefore, the correct option is D.

While the ocean covers a significant portion of the Earth's surface, human exploration and understanding of its depths are still limited. Only about 5% of the ocean has been explored and studied, leaving a vast majority uncharted.

In contrast, scientific missions, including manned and unmanned missions, have provided substantial information about the moon's geology, surface composition, and other characteristics.

This knowledge is largely due to the numerous space exploration missions that have been conducted over the years, allowing scientists to gather data and insights about the moon's features and history.

Learn more about ocean in:

https://brainly.com/question/30221089

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I NEED THIS ASAP RIGHT NOWW!!! WILL GIVE BRAINLIST IF CORRECT

Are amphibians more closely related to primates or ray-finned fishes? HOW do you know?

Answers

Answer:

Amphibians are closer in relations to the Primates than the Ray-Finned.

Are the Amphibians more closely related to the Primates or Ray-Finned Fish?

Yes, the Testudines are closer in relations to the Lepidosauria. The ancestors between the Testudines and Lepidosauria are more recent in time compared to the Lepidosauria and Mammalia.

Are the Testudines (Turtles) more closely related to the Lepidosauria (Lizards, Snakes) then the Mammalia to the Lepidosauria?

Explanation:

i did look it up

Which statement is part of the Law of Universal Gravitation?
A. Earth's gravity stops when items or people leave the planet
B. objects that have different masses, exert the SAME gravitational pull
C. All objects exert a gravitational force on each other
D. small objects exert a greater pull than large ones
No

Answers

Answer: none of above

Explanation:

yeah. none of the above
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