Answers
Answer:
1. a
2. b
3. b
4. c
Explanation:
Related Questions
Which of these is true for a fertilized egg?
O
A. It has DNA from both parents.
O B. It has a haploid number of chromosomes. .
O C. It has DNA but no chromosomes.
O D. It has too many chromosomes until it splits.
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I need someone who is kind enough to help with a year 7 science test for free thank you may god bless you.
Answers
Answer:
I can help the best I can with your science question. what is your question? I will assist you and explain to you in the best way possible!
Explanation:
Please either ask your science question in the comment or make a question on Brainly.
A man and a woman are preparing to have a child. The man finds out that his father has
Huntington's disease. Huntington's disease is an autosomal dominant disorder. The man's
mother does not have Huntington's disease. The man has a sister who does not have
Huntington's disease.
a. Create a pedigree for the family describe. (Be sure to shade individuals affected with
Huntington's disease).
b. List the genotypes on your pedigree.
c. What is the probability that the male has Huntington's disease?
d. If the man has Huntington's disease what is the chance he will pass the disorder to his
child? The mother of the child is unaffected.
Answers
Answer:
Man´s father → Huntington's disease → DdMan´s mother → Normal → ddMan´s sister → Normal → dd The mother of the child is unaffected → ddMan → Dd → If affected → 50% or 1/2 of probability Man → dd → If not affected Child → Dd → If affected → 50% or 1/2 of probability Child → dd → If not affectedExplanation:
Huntington´s disease is Autosomal and Dominant, which means that by getting only one copy of the altered gene coming from any of the parents, the receiving person will express the disease.
Let us name the dominant allele D and the recessive allele d.
DD or Dd genotypes express the diseasedd genotype expresses the normal phenotype.Man´s father → Huntington's disease → Dd
Man´s mother → Normal → dd
Man´s sister → Normal → dd
The mother of the child is unaffected → dd
If the sister is normal, dd, means that the father is heterozygous for the trait. The sister inherited a recessive allele from her mother and the other recessive allele must have been inherited from the father, who expresses the disease.
The man has 1/2 of the chances of having the dominant allele because his mother could only pass a recessive allele (100%), and his father could pass either a recessive (50%) or a dominant allele (50%).
If the man inherited the dominant allele from his father, he is heterozygous for the trait, and he has 1/2 of the probability of providing a D allele to the child. The man´s wife is normal, dd, so she can only provide a recessive allele to the child.
Pedigree:
When drawing a pedigree, remember the symbols you need to use
Circles represent femalesSquares represent malesRhombus represents not specified sex (unborn)Full-shaded figures represent affected individualsEmpty figures represent unaffected individuals. Generations are represented with roman numbersIndividuals can be represented with numbers, genotypes, or namesYou will find the pedigree in the attached files
Q-6 List two differences between SER and RER.
Q- 7 What is the chemical composition of cell wall in plants and fungi respectively?
Q- 8 List two differences between SER and RER.
Q- 9 What are genes? What is their function?
Answers
6.Smooth Endoplasmic Reticulum(SER)gives rise to spherososomes/oleosomes,It is peripheral and may be connected to plasmalemma.
Rough Endoplasmic Reticulum(RER) It helps in the formation of lysomes,It is internal and connected with the nuclear envelop.
7.Plant cell walls are composed of cellulose,while fungi cell walls are composed of chitin.
8.answer on question number 6.
9.A gene is basic physical and fundamental unit of heredity.Some genes act as instructions to make molecules called proteins.How ever,many genes do not code for proteins...
It might help you!!!
five adaptive features of animals in forest habitat
Answers
Answer: mimicry, camouflage, poison, reduction in size and stature, and changing habitats.
Hope this helped you!
the function of mitochondria is
Answers
hope this helps
Answer:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate
The enzyme could become spatially distorted, thus reducing the ability of the active site to catalyze the reaction. Tight enzyme-substrate binding will reduce the forward rate constant for the reaction. Tight binding of the enzyme to its substrate will pull the substrate out of solution, thus decreasing the driving force for the forward reaction. Tight binding of the enzyme to its substrate will result in the enzyme-transition state complex being higher in energy than with weaker binding. All of the above.
Answers
Answer:
All of the above.
Explanation:
All the given options are the potential disadvantage of an enzyme that have a very high affinity for its substrate.
The enzyme can be distorted spatially and thus reduces the ability to catalyze the reaction of the active site.
The tight binding of an enzyme to a substrate results in enzyme transition state complex which is higher in energy.
The tight binding also pulls the substrate out of the solution and decreases a driving force in the forward reaction.
How is a baby's gender (male/female) determined by chromosomes? Make sure
you mention X and Y chromosomes
No links pls
Answers
the father can contribute an X or Y to the baby
Some blackcaps that migrate to the United Kingdom have become distinguishable by certain physical and behavioral traits from blackcaps that migrate to Spain. What best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter?
Answers
Answer:
Increases.
Explanation:
There is a good effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter because there is more food available for the blackcap bird which automatically increase the population of the bird. Food is the main factor that contributes in the increase or decrease population of blackcap in the United Kingdom and prevent the removal of this bird in that environment.
Please help ASAP will mark brainliest
Answers
Answer:
Swelling, itching or irritation of the mouth or throat. Hives, itchy rash or swelling of the skin. Nasal congestion.
When the villi get destroyed, your body cannot absorb nutrients. This can result in malnutrition. It can also cause other complications, such as permanent damage to your small intestines.
Observational Research is defined as
A). An idea generated by scientists based on their observations
B). A stepwise process used by scientists to evaluate different observational techniques
C). A Process that involves looking at factors in two or more groups of subjects to see if there is a relationship to certain outcomes?
Answers
How are data from a scientific experiment used?
A. As proof a hypothesis is true
B. As the answer to a scientific question
C. As evidence for a conclusion
D. As a guiding question for designing an experiment
Answers
To know more about scientific experiment here
https://brainly.com/question/2449529
#SPJ2
15. The movement of molecules in a fluid or gas from a region of higher
concentration to a region of lower concentration is called:
Answers
Explanation:
in gases it is called diffusion:)
What are some possible sources for early organic molecules?
Answers
Answer: I hope this is the right answer you were looking for, if not I'm sorry
Explanation:
The first organic molecules formed about 4 billion years ago. This may have happened when lightning sparked chemical reactions in Earth's early atmosphere. RNA may have been the first organic molecule to form as well as the basis of early life.
which of the following makes its gravitational pull increase ?
Answers
Answer: The mass decreases
Explanation:
What are the scientists doing incorrectly? What could they do to make their work in the lab safer? Why is it important to follow these procedures? Part A
Answers
Answer:
Part A
The scientists threw away their instructions. They should have kept their instructions to properly and safely follow all procedures. Following instructions also ensures useful experimental results.
Part B
The scientist is not wearing safety goggles. He should wear goggles during activities that can harm his eyes. Working safely to avoid injury is every scientist’s job.
Part C
The lab area is messy and needs better organization. The scientist should carefully store the test tubes that aren’t being used. A clean work area helps scientists work safely and efficiently to avoid costly accidents.
Part D
The scientist is disposing of dangerous materials incorrectly. He should have followed disposal instructions as described in the lab procedure. Improper disposal can pollute the environment, harm fragile wildlife, and damage facilities. Scientists must be environmentally responsible.
Part E
The scientist didn’t clean up after an accident. He should have disposed of the glass immediately after it broke rather than waiting. Accidents create hazards for scientists and those around them.
Part F
Scientists should not eat or drink in a lab area. They could swallow something harmful or foul. Snacks and meals should be eaten during designated breaks and never near the lab area.
Explanation:
Plato
What is true Of the increased levels of CO 2 in the atmosphere
Answers
Answer:
yes
Explanation:
Target
37.16) A
is a substance that speeds up a chemical reaction without being used up in the reaction.
reactant
lamino
product
catalyst
molecule
Answers
Answer:
catalyst
Explanation:
only one make sense
Brainliest pls pls pls
Write a short paragraph (3- -4 sentences) to compare TWO different locations in the world. You should focus on the type of precipitation and the reason(s) why it is different. Make sure to mention the names of your chosen locations and the type of precipitation experienced in your comparison.
Answers
Answer:
i would write about a well economically developed country like " USA, China, Japan or Germany" Vs a badly developed country like "Fiji , Peru , South Africa" its easy to research these places :)
Explanation:
good luck champ
Name one way the male and female endocrine systems are different.
Answers
Answer:
Men produce more testoterone and women produce more estrogen.
Explanation:
While both men and women produce testoterone and estrogen, men have higher concentrations of testoterone and women have higher concentrations of estrogen.
Smallpox (Orthopoxvirus variola) is the first human disease considered to be globally eradicated. All of the following factors played a huge role in its eradication EXCEPT for __________.
a. the existence of an inexpensive, effective vaccine
b. the removal of animal reservoirs in nature
c. rapid diagnosis due to obvious signs and symptoms
d. the fact that there are no asymptomatic carriers, so the disease is always diagnosable
Answers
Answer:
a
Explanation:
Questions
A macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which includes
fruits, leaves, nuts, and seeds of plants. Which of the following describes a biotic factor of the macaw's habitat that provides a survival advantage for
these birds?
o
The colorful feathers are lost and regrow each year
0
Some rainforest predators are able to climb trees
o
Trees provide shelter and a macaw
Answers
Answer:
Trees provide shelter
Explanation:
Firstly, a biotic factor refers to the living component of an ecosystem including the plants, animals and microbial species of one another. According to this question, a macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which includes fruits, leaves, nuts, and seeds of plants.
In order to ascertain that this birds species are in survival advantage, trees, which is one of the biotic factors found in the tropical rainforest, provide shelter for these birds.
Which of the following is a true statement about skepticism?
Answers
Answer:
We’ve come to use the word “skepticism,” in our society, most often, to express doubt in new or “far out” ideas. Originally, in ancient Greece, skepticism was the philosophy of questioning all claims, religious, ethical, scientific, or otherwise.
Explanation:
This is what I got from searching
Plz don’t ignore tell me if this is correct helpppppp plzzzzzzzzzzzzzzzz
Answers
Answer:
I'm assuming yellow is dominant since they used Y
YY and Yy are both yellow
yy is blue
So Yellow color would have 75% phenotype probability and Blue would have 25%
6 characteristics feature of grassland habitat
Answers
Answer:
Vegetation structure that is dominanted by grasses
Help is this the correct answer
Answers
Answer:
Yellow colour: 25%
Blue colour: 75%
Explanation:
which is not basidiomycota?
a)cup fungi b)jelly fungi
c)shelf fungi d)smut fungi
Answers
A. Cup fungi
Which of the following are likely to be studied by a biologist? Group of answer choices
A All of these
B What chemicals cause plant stems to lengthen or flowers to bloom?
C Why does the Texas horned lizard squirt blood out of its eyes? D How is a banded pipefish able to hide in its environment of seaweeds?
Answers
Answer:
A
Explanation:
choose the true statement(s) concerning the eukaryotic glycocalyx
Answers
Explanation:
eukaryotic glycocalyx is present in prokaryotic cells, eukaryotic cells can also have glycocalyces especially single celled eukaryotic organisms.
Which feature of the ocean floor is caused by one tectonic plate moving under another at a convergent boundary? A. A flat plain B. A mid-ocean ridge C. A continental shell D. A trench PREVIOUS
Answers
Answer:
D
Explanation:
A trench is formed, a mid ocean ridge is formed while doing the opposite of what is described, a shelf is when land sinks, and a plkain isjust a plain
Answer:
D. A trench
Explanation: