PLZ EXPLAIN, AND I NEED HELP NOW!
If an organism's body cells have 12 chromosomes, how many chromosomes will sex cells have? Explain.
Answer:
6 chromosomes
Explanation:
Answer:
The gametes or sex cells produced by the organism will have 6 chromosomes if the organism has 12 chromosomes.
Explanation:
The diploid organism has all chromosomes in pairs, one chromosome inherited from male parent & another chromosome in the pair is inherited from the female parent. If an organism has 12 chromosomes, it has 6 different types of chromosomes, differing from one another in length, the position of centromeres and genes present on these. Six different types of chromosomes constitute a haploid set of chromosomes. Two chromosomes of the same type are called homologous chromosomes and these constitute a homologous pair. The cells producing sex cells or gametes undergo meiosis (reduction division) so that each gamete contains only one chromosome of a homologous pair. The gametes are haploid, having half the number of cells as compared to somatic cells.
Hope this helps have a great day/night! :}
which of the following is most likely to occur when a barrier develops between two populations of the same species?
1. gene flow between the groups will increase due to more diversity between them
2. the species will become more distinct from each other
3. both groups will go extinct because there are not enough individuals to support them
4. individuals will develop adaptations that allow them to rejoin the other population
Answer:
The answer is 2
Explanation:
If the populations are separated from each other, they will start to be more diverse.
Please help
ITS URGENT ,Thank youu
Which of the following is not a difference between photosynthesis and cellular respiration?
Answer: D
Explanation: They both play an important role in the carbon cycle. Photosynthesis removed CO2 from the atmosphere while cellular respiration causes the release of CO2 into the atmosphere.
The others are major differences
Photosynthesis has as its products Starch and O2 while those of cellular respiration are water , CO2 and energy.
The materials needed for photosynthesis are water and CO2 while those for cellular respiration are starch and O2
Photosynthesis occurs in chloroplast while respiration takes place in mitochondria .
Thus the only non- difference is D.
Genetic mutation which can lead to diversity between organisms can be caused by
Answer:
DNA
Explanation:
Mutations are changes to an organisms DNA that creates diversity within a population by introducing new alleles. Some mutations are harmful and are quickly eliminated from the population by natural selection harmful mutations prevent organisms from reaching sexual maturity and reproducing.
Fill in the blank.
1. Tall pea plants are dominant, while short plants are recessive. In a cross between a purebred
tall plant and a purebred short plant, the offspring will all be plants.
2. Tall pea plants are dominant, while short plants are recessive. In a cross between two plants
heterozygous for height, the offspring will be both tall and short in a
ratio.
Answer:
1. The offspring will be all tall pea plants
2. 3:1 is the ratio for tall and short
Answer:
1. tall (or heterozygous)
2. 3:1
Explanation:
Explain how the flow of energy is linked to entropy and how the law of conservation of matter applies to the carbon cycle
The first law of thermodynamics is equivalent to the law of conservation of energy: energy cannot be created or destroyed; the total amount of energy in the Universe is fixed. Energy can be transformed from one form to another or transferred from one place to another but the total energy must remain unchanged.
Cells with limited potential to develop into any type of cells are called
Please help this is a 7th grade science problem
Answer:
The Answer is C
Explanation:
Mark me as Brainliest PLEASE
Answer is...
Molecule B
Elaborate: Describe two adaptations and explain how they help you survive.
Answer:
hope help you stay happy
Answer:
walking upright, allows us to be able to travel while carrying things with our hands. Sweating, helps us cool our body down so it doesnt overheat.
Can you please help me
Which of the following describes a scientific theory, such as evolutionary theory? (Check all that apply).
A. When a scientific theory is proven, it becomes a scientific law.
B. It is an explanation for a wide variety of natural phenomena.
C. It is plausible explanation for many natural phenomena that has not yet been fully tested.
D. Scientific theories are the most certain knowledge that can be developed in science.
E. Numerous studies, which have all tested the theory but in different ways, have all converged on the same explanation.
F. There is ample evidence supporting the explanation.
Answer:
b
Explanation:
Evolutionary theory highlights the adaptive value of within-species variability. Optimal biological and behavioral strategies differ depending on the nature of the environmental context as well as the characteristics of the organism such as age, sex, health, or physical size.
Carbon is an organic element found in all life forms. Which of the following occurs through the process of
breaking down carbon-based molecules?
A. Water molecules are transferred through the body.
B. Elimination of waste products occurs.
C. Energy needed for life functions is released.
D. Absorbing of oxygen through pores occurs.
Answer:
C is the Answer.
Explanation:
Carbon is an organic element which when broken down will release energy within an organism.
Process of elimination
A: Wrong because Water has nothing to do with carbon being broken down.
B: Wrong because when carbon is broken down no waste products are being eliminated.
C: Right because Energy is released when Carbon is broken down
D: Wrong because Carbon being broken down has nothing to do with oxygen being absorbed.
Which two characteristics describe the most stable ecosystem on Earth?
a. They are near the poles
b they are near the equator.
c. They have high biodiversity
d they have few seed plants
Answer:
They have high biodiversity
High at the equator
Explanation:
This is because a stable ecosystem is the one that occur at equilibrium and have the ability to resist any form of resilience or disturbance and still grow fast. A stable ecosystem have high biodiversity because that are comprises of different plants and animals that are able to live and survive. Species diversity are more at the equator than at than at the poles.
The table shows data about abiotic factors of streams in two different watersheds.
In general, a stream with a lower temperature and more neutral pH tends to be healthier. Based on these
criteria, which watershed contains the healthier stream?
Select one:
Watershed 2
Both streams are equally healthy.
There is not enough data provided to answer the question.
Watershed 1
Answer: b
Explanation:
Based on these criteria, the watershed that contains the healthier stream is, that both streams are equally healthy. The correct option is B.
What are abiotic factors?An abiotic factor is a non-living component of an ecosystem that influences its surroundings. Temperature, light, and water are all components of the terrestrial environment.
Abiotic elements in a marine ecosystem include salinity and ocean currents. Abiotic and biotic forces interact to form a distinct ecosystem. Abiotic influences are found in all non-living components of an ecosystem.
They are often made up of both physical and chemical components. Abiotic factors are nonliving components of an ecosystem that influence the environment. Temperature, light, and water are among the examples. Abiotic elements in a marine ecosystem include salinity and ocean currents.
Therefore, the correct option is B. Both streams are equally healthy.
To learn more about abiotic factors, refer to the link:
https://brainly.com/question/10111151
#SPJ2
What happens when the most
limiting factor in an ecosystem is
removed?
5. If Laura rides her bicycle down a straight road for 500 m, then turns around and rides back to where she
started, her distance is
her displacement?
a. greater than
c. the same as
b. less than
d. can't determine
15. Which plant is the best example of this life cycle adaptation?
Some plants produce a large number of
seeds. The more seeds that are produced,
the more likely that some of them will
survive, germinate, and grow. Examine the
bar graph below.
Number of seeds produced
70
30
20
10
0
Plant A Plant B
Plant C
Plant D
Plant
The diffrence between prokaryotic and eukaryotic organism
Answer:
Explanation:
prokaryotic organism does not have nuclear membrane.
eukaryotic organism have nuclear membrane.
Worth 30 points, and I will recommend you! PLS!
If the primary consumer level contained 1,500 kcal (joules) of energy, how much energy would be in the tertiary consumer level?
Answer:
15
Explanation:
Divide by 10%
1500
to
150
to
15
25 POINTS & BRAINLIEST!!
Which of the following is an accurate statement about pathogens? (2 points)
Infection and disease are caused by pathogens living in infectious agents found in the environment.
Pathogens, which cause infection and disease, are the most abundant organisms in the environment.
Most organisms in the environment are harmless, except for pathogens, which can cause disease.
The environment is rich in infectious agents that transmit disease through pathogens.
Answer:
I believe it is d
Explanation:
The answer is Most organisms in the environment are harmless, except for pathogens, which can cause disease.
The oldest and broadest pathogens are any organism or pathogen that can cause disease. Pathogens are sometimes called infectious pathogens or simply bacteria. The term pathogen came into use in the 1880s.
Pathogens are usually defined as microorganisms that cause or can cause disease. Pathogens are defined as microorganisms that can harm the host.
Various microorganisms can cause illness. Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms. Some common pathogens in each group are listed in the column on the right.
Learn more about pathogens here:https://brainly.com/question/1008643
#SPJ2
Four children in a family have four different blood types. If the father has
type A blood, which blood genotype best represents the mother?