Answer:
regulatory mechanism that's either positive or negative feedback mechanism
Explanation:
In thermoregulation, the body temperature is contracted by the thermoregulatory center in the hypothalamus. It receives input from two sets of thermo receptors. Receptors in the skin monitor the external temperature
A woman with blood type a (whose parents both had AB blood) mates with a man with blood type B (his mother was AB and the father was O blood). Show the cross and the genotype and phenotype ratios of the potential offspring.
Answer:
1 AB:1 A
Explanation:
Ia Ia
Ib IaIb IaIb
i Iai Iai
i represents type O blood which is always recessive
the capital I represents co-dominant traits (a or b)
Iai is type A because O is recessive and will be masked by Ia
IaIb is type AB because both capital I traits will be codominant
This cross ultimately gives a 1:1 ratio of type A to type AB
We have two kinds of rats, dark brown and light brown rats in a population. In sea shore, which kind of rats, will have higher survival rate, taking into consideration, natural selection?
a.
Neither of them
b.
Dark brown rats
c.
Light brown rats,
d.
Both of them
Answer:
a option neither of them
PLEASE HELP ( I WILL MARK BRAINLIEST)
The skeletons of similar forelimbs arose due to similar function. These organisms, however, did not share a common ancestor. Which type of structures are
the foreimbs shown in the diagram?
A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced
Answer:
It would be 100 % pink.
Explanation:
Pink and Pink make Pink. Just as Red and White make Pink.
Due to incomplete dominance, when two pink flowered plants are crossed, the color of offspring could be 1Red: 2Pink :1White.
What is incomplete dominance?In some cases it happens that a certain characteristics does not match with either of their parents, rather it shows new traits.For example: snapdragon.When parent generation of red flowered plant (RR) is crossed with a white flowered plant (WW), F1 produces plants with pink flowers (RW). it does not resembles either of their parents.And when F1 was self pollinated: RW x RW, it produces 1 RR: 2RW: 1WW.Hence, the offspring will be 1 Red flowered plant: 2 Pink flowered plant :1 White flowered plant.
To know more about incomplete dominance here
https://brainly.com/question/14053639
3SPJ2
How is antigenic drift beneficial for viruses?(1 point)
A) It changes how genes code for antigens.
B) It leads to less mRNA which is easier to copy.
C) It creates a variety of immune responses in the host organisms.
D) It makes them unrecognizable to the immune system.
Answer:
1. Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring.
2. random mating
3. The green skin color is being selected over blue skin color.
4. DNA
5. They show intermediate steps in the evolution process.
6. Different islands had very different food resources available, and only individuals that were adapted to eat those food resources survived and reproduced on that island.
7. Those who have traits that help them survive are able to reproduce, and their offspring have those traits, leading to a change in the species over time.
8. It makes them unrecognizable to the immune system.
9. The exposure of human populations to less UV light required a reduction in melanin to produce more vitamin D for healthier bones.
10. the correlation between air pollution and white moth predation
11. It is a biological process that leads a population to have a widespread expression of an advantageous trait.
Answer:It makes the unrecognized to the immune system:)
Explanation:
Put the following in order of size, from smallest to largest
chromosome, gene; base pair
Answer:
The correct order of size - base pair < gene < chromosome.
Explanation:
Nitrogen base-pair attaches with the phosphate group and a sugar molecule to form a building block of DNA or nucleic acids. Nucleic acids make the gene is the physical and functional unit of hereditary that takes the information from parent cells to daughter cells.
Chromosomes are a structure that appears thread-like and makes the genome with different chromosomes. These structures are made up of wrapped DNA or genes around histone proteins.
1. Discuss the two types of reasoning and how they are used by scientists to develop and support a hypothesis
define organic agriculture production for at least three to five sentences
Answer
Organic farming can be defined as an agricultural process that uses biological fertilisers and pest control acquired from animal or plant waste. Organic farming was initiated as an answer to the environmental sufferings caused by the use of chemical pesticides and synthetic fertilisers.
Do Birds Really Abandon Their Chicks If Humans Touch Them? 25 points!!
Answer:
Yes they do.
Explanation:
birds will abandon their young after being touched by human hands because they can smell the scent of the human on their babies. This then causes the mother bird to become afraid of possible predators and to leave its children to the elements
answer: no
explanation: parent birds do not recognize their young by smell. They will not abandon a baby if it has been touched by humans.
We have two kinds of rats, dark brown and white rats in a population. In a rain forest scenario, with dark top soil, which kind of rats can survive better, taking into consideration, natural selection?
a.
White rat
b.
Both of them will survive
c.
Brown rat
d.
Neither
Answer:
C
Explanation:
they blend in with the soil color
earths inner core:__as earth's outer crust:liquid
Answer:
The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly composed of basalt. The inner core is made from Iron and Nickel.
Explanation:
What changes in the ecosystem will take place during secondary succession A. The flowers will deplete the soil of nutrients in the area will become a desert
Answer:
A
Explanation:
Why can king snakes eat rattlesnakes ?
What are the closest astronomical bodies to earth?
Answer:
The Moon, Venus and Mars are the planets nearest to the Earth.
plsssssss help
NO LINKS pls
Which statement best descrſoes photosynthesis?
a. when plants produce their own water
b. when plants produce their own sugar
C. when plants produce oxygen and carbon dioxide
d. when plants self-pollinate
Answer:
b. when plants produce their own sugar
Explanation:
Let's look at the products of photosynthesis! During the process of photosynthesis plants break apart the reactants of carbon dioxide and water and recombine them to produce oxygen (O2) and a form of sugar called glucose (C6H12O6).
Glucose provides plants with needed food through a process called photosynthesis. This process helps plants convert the energy they take in from sunlight into sugar to nourish the plant. Photosynthesis occurs when carbon dioxide, water and sunlight are combined. Plants use these to form glucose and oxygen.
Hope this helps!
Most fossils are of what
Answer:
anything
Explanation:
I NEED HELP ASAP PLS!!
Answer: well i think its c but am not really sure
Explanation:
Contrast mechanical and chemical digestion.
Answer:
Chemical and mechanical digestion are the two methods your body uses to break down foods. Mechanical digestion involves physical movement to make foods smaller. Chemical digestion uses enzymes to break down food.
Explanation:
Answer:
While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food
Explanation:
atch the statement to the following options.A. One of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.B. Several X-shaped structures may be visible under the microscope and indicate where crossing over has occurred.C. A lattice of protein holds two replicated chromosomes in precise register with one another.D. Four chromatids are held together by a zipper-like structure.E. A process in which pairs of homologous complex chromosomes line up side by
Answer:
A. Homologue.
B. Chiasma.
C. Synaptonemal.
D. Synaptonemal.
E. Synapsis.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
Synaptonemal complex can be defined as a network of proteins that is responsible for holding homologous chromosomes (homologues) together.
Generally, a synaptonemal complex (protein lattice) is formed between homologous chromosomes during mitosis and meiosis. Also, synaptonemal complex is important for the formation of the four sister chromatids referred to as tetrads.
Furthermore, the synaptonemal complex (protein lattice) has a tripartite structure which comprises of the following components;
I. SC protein-1 (SYCP1).
II. SC protein-2 (SYCP2).
III. SC protein-3 (SYCP3).
In conclusion, the synaptonemal complex plays a significant role in synapsis, recombination and chromosome pairing.
Matching the various terminologies in genetics with their description, we have;
A. Homologue: one of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.
B. Chiasma: several X-shaped structures may be visible under the microscope and indicate where crossing over has occurred.
C. Synaptonemal: a lattice of protein holds two replicated chromosomes in precise register with one another.
D. Synaptonemal: four chromatids are held together by a zipper-like structure.
E. Synapsis: a process in which pairs of homologous complex chromosomes line up side by side.
what type of limiting factor is space
A.) abiotic
B.) biotic
Although these resources are required, organisms can perish due to other factors within an ecosystem. How can populations be affected by other factors than those dealt with in this lab. You must identify and explain at least three others.
Answer:
What factors were dealt with in your lab? otherwise factors that affect populations can range from abiotic factors like contaminated soil water and food from natural disasters and biotic factors like predators killing the organism or plants not producing the necessary nutrients for the food chain.
Explanation:
10.FR in the table with the function and an example structure in the body for each
body system
Body System Main Function Example Structure
in the Body
Integumentary
Skeetal
Muscular
Nervous
Circulatory
Resperatory
Endome
Lymphat
Digest
Excretory
Answer:
https://www.wsfcs.k12.nc.us/cms/lib/NC01001395/Centricity/Domain/8472/Body%20Systems%20Interactions%20chart.pdf
Explanation:
the answers should be in that link
Many plants produce seeds which have small hooks on them. These hooks will attach to animals as they
move past the plants. What process do these hooks help the plant with?
A. pollination
B. fertilization
C. germination
D. seed dispersal
Explain why mining has such a large impact on the environment.
Answer:
Mining has a large impact on the environment because minerals are contained within the Earth. Earth must be removed in order to extract the minerals. When the minerals are close to the surface, the earth is removed, causing destruction to the shape of the land and the flora and fauna living in that area.
Answer: I agree with the above answer
Floods, droughts, fires, and earthquakes are examples of
Answer:
the answer is natural disasters
Answer:
Natural disasters
Explanation:
hope this helps
The process of meiosis is illustrated here. The outcome of meiosis is very important in the sexual reproduction and life cycle of
diploid organisms. Evaluate these statements and determine which ones accurately describe the outcome of meiosis. You may select
ALL that apply.
-)
A)
Meiosis produces genetically diverse cells.
B)
Meiosis increases genetic variation in the offspring.
C)
Meiosis produces haploid cells from a diploid parent cell
D)
Meiosis increases the genetic content in the daughter cells.
E)
Meiosis maintains the number of chromosomes originally present in the
parent cell.
Answer:
A) Meiosis produces genetically diverse cells.
B) Meiosis increases genetic variation in the offspring.
C) Meiosis produces haploid cells from a diploid parent cell
Explanation:
Through crossing over, meiosis produces genetically diverse cells causing more genetic variation of offspring. The Daughter cells in meiosis are formed from a diploid cell that has all 46 chromosomes, however the daughter cells are haploids as they need to join with the other gamete to have a full set of chromosomes.
Mendelian Inheritance
Two homzygous plants are crossed. One is dominant for all four traits while the other is recessive for all four traits. What are the genotypes of the parents?
Suppose you travel to a tropical place like the Bahamas and watch the coastal poikilotherms, such as fish, crabs, and starfish, swim and crawl about in the warm waters. Suppose then that you travel to northern Maine and watch the related species of poikilotherms in the cold waters there. It would not be unreasonable to expect to see the animals in Maine moving about in slow motion compared to those in the Bahamas. In fact, however, rates of locomotion are likely to look to your eye to be more similar than different in the two places. Design experiments to assess whether the Maine animals are especially able to be active in cold waters. If you find that they are, how might their high ability for activity in cold waters be explained
Answer:
The correct answer is -
exposure of the opposite environments to the species and see if they are able to be active in cold waters.
If they are then species of organism in Maine and could have more ice-nucleating agents which are responsible for their high ability for activity in cold waters.
Explanation:
To test the assess if the Maine species of organisms are especially able to be active in cold waters an experiment can be designed where one needs to place the species or animals from Maine and Bahamas in reverse conditions.
Maine animals are placed in warm water environments and species from the Bahamas can be placed in cold water. Finding if they are able to adapt in reverse condition by calculating various processes and motion, if yes then it shows that it is not a special ability to survive in cold temps. However, if it is not then the Maine poikilotherms are specially designed for their environment. In case of yes then species of organism in Maine and could have more ice-nucleating agents
Organisms that produce
Answer:
Autotroph or producers
Explanation:
An organism that produces its own food is a autotroph