Answers
Answer:
Sexual life cycles involve an alternation between meiosis and fertilization. Meiosis is where a diploid cell gives rise to haploid cells, and fertilization is where two haploid cells (gametes) fuse to form a diploid zygote.
During meiosis Diploid cells divides which gives rise to haploid cells
while During fertilization two haploid cells fuses together which gives rise to offspring carrying a Diploid cell.
Cells found in human body are Diploid cells because they contain 46 chromosomes, while the sexual gametes are haploid cells because the number of chromosomes they possess is half ( 23 ) the number of chromosomes contained in every other body cell .
Meiosis is a cell division process whereby a parent cell is broken down into four gametes with each gamete containing half the number of genetic material/chromosomes contained in the parent cell.
Hence we can conclude that During meiosis Diploid cells divides which gives rise to haploid cells while during fertilization two haploid cells fuses together which gives rise to offspring carrying a Diploid cell
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Related Questions
PLEASE ANSWER ASAP DUE 11:59 FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Describe an adaptation to a plant's physical characteristic and explain how this adaptation helps the plant survive.
Answers
The development of stomata that are closed in arid conditions is an adaptation in plants. It allows plants to survive.
What is evolution?Evolution can be defined as descendence with modification, a process that involves natural selection.
Natural selection refers to the differential survival and reproduction of the more adapted organisms in a population.
Adaptations are specific features that allow organisms to have higher fitness in a population.
Stomata are structures for the interchange of gases (CO2 and O2) from the environment and can be closed to avoid water loss.
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explain why strength of lifting weights cannot be passed from parent to offspring in terms of evolution
Answers
Answer:
cuz if your parents lift weights but you sit on the couch all day and do nothing dont expect to be in good shape
Explanation:
Question 1:
Gases are brought into and out of a plant through its___
options:
1. root’s
3. leaves
_________________________________________
Question 2:
Animals that contain many cells are called____
options:
1. bacteria
2. Multicellular
3. Unicellular
(hi if u want brainlist's answer this question then ask another random question on your page so u can give me brainlist back, also i need to people to answer so i can chose one of you guys to give the brainlist's to, deal or no?)
Answers
Answer:
Answer 1= Leafs
Answer 2= Multicellular
#1- The leafs on a plant take in co2 and relese oxygen
#2 Multicellular means that there Multiple cells
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3. How does our current atmosphere support the concept of a simultaneous coevolution of Earth's systems and life on Earth?
Answers
Earth systems cause a continual co-evolution of Earth's surface and the life
The condition influenza is caused by a virus
Answers
Answer:
True.
This means antibiotics will have no effect on the infection.
An example of a virus caused by a bacteria would be pneumonia.
Plants, like all organisms, adapt to the conditions of their environment. Some special challenges a plant may face are drought, flooding, and a salty environment. Your task is to identify and describe ways that plants adapt to these challenging conditions in their environment. Select one plant adaptation to drought, one adaptation to flooding, and one for salt tolerance. Explain how each adaptation enhances plant survival. Identify a scholarly source of information for each. Use quotes appropriately; be sure your responses are written in your own words
Answers
Answer:
Hydrophytes is flood tolerant plants, barley is salt tolerant crop and sorghum is a drought tolerant crop.
Explanation:
Hydrophytes also known as flood tolerant plants that have adaptations to survive flood problems. The plant has the development of air spaces in the roots and stems which allow diffusion of oxygen from the aerial portions of the plant into the roots. Barley shows a greater degree of salt tolerance by applying method of osmoregulation which helps the plant to tolerate salt stress. Sorghum is a plant that is adapted to drought condition. These plants have less number of stomata and waxy layers on the leaves which lowers the rate of evaporation or transpiration.
.
Traits that are due to _______ are considered to be acquired traits.
A education
B nutrition
C injuries
D all of these
Answers
Which of the following correctly compares the types of root structures.
A. tap roots have many small roots while fibrous roots have a primary root and auxiliary roots
B. Tap roots have a root cap and undergo primary growth, fibrous roots lack a root cap and undergo
secondary growth
C. monocots have fibrous roots, dicots have tap roots
D. monocots have tap roots, dicots have fibrous roots
Answers
Answer:
C
Explanation:
Dicots have a tap root system, while monocots have a fibrous root system. A tap root system has a main root that grows down vertically, and from which many smaller lateral roots arise.
HELP PLS THIS IS DUE IN 20 MINUTES AND I FORGOT 2 STUDY
Why are lichens a good pioneer species after a volcanic eruption?
a - They are able to grow on moist soil.
b - They are able to grow on bare rock.
c - They are able to attract animals.
d - They are able to grow without water.
Answers
Select from the drop-down menu the best answer for each question. Which specialized organelle is shown? Which process occurs in the above organelle?
Answers
Answer: the person who asked this question attached the answer at the bottom of thier question I Just wanted to put an answer so people won‘t miss it.
Explanation:
Answer:
the person so submitted this question also had the answers attached, but it's Mitochondrion and Cellular Respiration
Explanation:
Can someone help me with this please?
Answers
Answer: D: All of the above
Explanation: Everything it listed is accurate.
what happens to carbon that has been in the soil for millions of years
Answers
Answer:
The element carbon is a part of seawater, the atmosphere, rocks such as limestone and coal, soils, as well as all living things. ... When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.
Explanation:
Create a food chain that contains four organisms from a producer through three consumers using corn, rabbit, grass, wolf, snake, eagle, grasshopper, Fox, rat, and hawk.
Answers
Answer:
Corn → rat → hawk → wolf
Explanation:
A food chain is a linear relationship that shows the feeding pattern of different organisms. The food chain portrays which organism located in one trophic level eats another. A forward arrow (→) is used to show that the organism after the arrow feeds on the organism before the arrow.
Every food chain starts with an organism called PRODUCER, which is capable of supplying the energy that is transferred from one organism to another. The energy moves along organisms called CONSUMERS as they feed on one another. According to this question, the below food chain shows the feeding relationship between four organisms:
Corn → rat → hawk → wolf
Note that, corn is the PRODUCER, while rat, hawk and wolf are CONSUMERS
Define the term mixture.
Answers
Answer:
Hey mate....
Explanation:
This is ur answer....
A mixture is defined as the result of combining two or more substances, such that each maintains its chemical identity. In other words, a chemical reaction does not occur between components of a mixture. Examples include combinations of salt and sand, sugar and water, and blood.
Hope it helps you,
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3. In tropical regions,
a, a permanent thermocline traps nutrients in the deep water
b. primary productivity is high all year round, because there is a constant supply of solar energy for
photosynthesis
c, the thermocline disappears in the winter
d. the upper and lower layers of water mix all year round
Answers
Answer:
a, a permanent thermocline traps nutrients in the deep water
b. primary productivity is high all year round, because there is a constant supply of solar energy for photosynthesis.
Explanation:
Thermocline occurs in the tropical regions because the temperature is very high which warms the upper layer of water bodies whereas the lower layer of water has low temperature due to no sunlight. The primary productivity is high all year in the tropical regions, because there is a constant supply of sunlight that is needed by the plants for preparing their own food.
3. In centaurs, the allele for curly tails (T) is incompletely dominant to the allele for straight tails (t). The hybrid genotype results in wavy tails. In a population of 1500 centaurs, 315 have curly tails, 820 have wavy tails, and the remainder has straight tails.
a. Determine the allele frequencies of: T = ____________ t = ____________
b. Determine the genotype frequencies of TT = ___________ tt = ____________
Answers
Answer:
a. Determine the allele frequencies of:
f(T) = 0.485 ≅ 0.48
f(t) = 0.515 ≅ 0.52
b. Determine the genotype frequencies of the exposed generation
F (TT) = 0.21F (Tt) = 0.55F (tt) = 0.24the genotype frequencies of the next generation
F(TT) = 0.23F(Tt) = 0.5F(tt) = 0.27Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Which is an example of an abiotic factor that might limit the number in an
African grassland giraffe population?
Select one:
decrease in predators
increase in predators
severe drought
increase in the birth rate
Answers
Answer:
severe drought, since other are biotic factors.
Answer:
the person above me or below me is correct
Explanation:
Which do you think is more important? - nature (genes) or nurture (environment)
Answers
Answer:
Nature.
Explanation:
Nature is more important than nurture because genes determine who we are. But our environment influences us, genes determine how it affects us. For this reason, nature is more important than nurture
.Explicati de ce algele pluricelulare au culoarea rosie,verde respectiv bruna ?
Answers
Answer:
Due to different pigments.
Explanation:
The multicellular algae are red, green and brown because of the presence of pigments. The red algae are red in colour because of the presence of the phycoerythrin which is a type of pigment. This pigment reflects red light due to already presence in its body and absorbs blue light that is necessary for photosynthesis process. The brown algae contain fucoxanthin pigment and green algae contain xanthophylls pigments that are responsible for its colour so we can conclude that these different types of pigments are responsible for the different colour of algae.
Please help :)
Multiple Choice: Circle the letter of the best answer
Which of the following describes the direction in which the Earth's plate
A. They can move to the right.
B. They can move to the left.
C. They can move up and down.
D. All of the above
Answers
Explanation:
the answer is a they can move to the right
if you were to design an organism, what 3 organ systems would be the most important to include?
Answers
What do krill eat and how long do they live?
Answers
Answer:
Krill eats pelagic algae
Antarctic krill are filter feeders that eat tiny phytoplankton (pelagic algae). They use their small, hair-like legs to filter out these microscopic algae that bloom in the nutrient-rich waters around Antarctica.
Explanation: They live till 10 years
Perspex is a form of transparent plastic.
It has a refractive index n = 1.50. A ray of light
strikes the flat surface of a Perspex block with
an angle of incidence of 40°. What will be the
angle of refraction?
Answers
=41.5
And the answer is 36.
In moths, White wings are dominant to tan wings. If a Ww moth is crossed with a ww moth, what are the possible phenotypes for their offspring? (Draw a Punnett square to help you.)
0% White, 100% Tan
25% White, 75% Tan
50% White, 50% Tan
75% White, 25% Tan
100% White, 10% Tan
Answers
Answer:
The genotypes are: Ww,Ww,ww,ww
So we will have 50% White, 50% Tan
Which statement is true about the Earth’s oceans? a. They are all getting larger due to the movement of tectonic plates. b. They have changed over time. c. They have not changed in 4 billion years. d. They are all getting smaller due to the movement of tectonic plates. Please select the best answer from the choices provided A B C D
Answers
Answer: B :)
Explanation:
Select ALL of the following genotypes below that respresent males.
XXY
XX
XYY
XXX
XY
Answers
Answer:
Is it XXX that all males want?
Explanation:
Just joking! I still think it is XXY
The genotype that represents males is XY of 50 % of both X and Y chromosomes where a slight change in the alignment might cause to chromosomal disorders .
XXY , XYY , XY represents males genotypes.
What are chromosomal disorders ?
These are the disorders which are associated with the change in the normal XY sequence of males. Various disorders and syndromes are associated with the mutation and the responsible factor can be trisomy like.
XXY is a chromosomal mutation found in the males only called as Jacob syndrome, XYY is a chromosomal disorder called as klinefelter syndrome found in males only.
XX is the genotype of a female, XXX is a condition that affects 1 in every 1000 females.
Thus, except XX and XXX is the exception as both of these represent females.
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What is an example of weathering, erosion, and deposition in Texas? (A)Gradual change to Guadalupe Peak (B)All of the above (C)The changing coastline of Texas (D)The creation of Palo Duro Canyon
Answers
Answer: Weathering, erosion, and deposition from the terrestrial surface topography and soil characteristics. These processes, for example, have formed a variety of landforms in Texas like beaches, plateaus, mountains, and canyons as well as soil types like fertile soil, clay-rich soil, and sandy soil. The combination of topography, soil, and climatic conditions in an area defines the types of habitats that the area can support this is crucial to ecoregion classification. Ten separate ecoregions occur in Texas including 1) East Texas Pineywoods, 2) Gulf Coast Prairies and Marshes, 3) Oak Woods and Prairies, 4) Blackland Prairie, 5) cross timbers and prairies (6) Rolling Plains, (7) High Plains, (8) TransPecos, (9) South Texas Plains, (Brush Country), and (10) Edwards Plateau. Such ecoregions are named for the major types of habitats topographical features (e.g. Edwards Plateau) present in their areas. The weathering, erosion, and deposition of each of these ecoregions have an important influence. Hope This Helps :)
Answer:
all the above
Explanation:
weathered soil and rock from the ecoregion is eroded and deposited in the upper south Texas plains ecoregion
List the organisms in a food chain of your choice. Label each organism as producer, primary consumer, secondary consumer and tertiary consumer (top
consumer).
Answers
Explanation:
producer(grass)primary consumer(zebra)secondary consumer(lion)tertiary consumer(vulture)
A female guinea pig that was pure-breeding for white fur, mated with a male guinea pig
that was pure-breeding for brown fur.
All the offspring had brown fur.
One of the male offspring mated with a female with white fur.
What proportion of white offspring would be expected from this cross?
one half
none
one third
O one quarter
Answers
Answer:
one half
Because they both were pure breed (bb and BB) and all the offspring came out as brown that means that brown is the dominant trait. So the offspring are all Bb and if the offspring mated with a white fur she would have to be bb meaning their children woild be either Bb or bb