BIOLOGY MIDDLE SCHOOL

How is sex determined in organisms like humans?A.all of the above
B.the combination of autosomes received from parents
C.the combination of sex chromosomes received from parents
D.the x-linked traits received from the mother

Answers

Answer 1
Answer:

Answer:

"The combination of sex chromosomes received from parents " .

Explanation:

Sex determination : The process by which sex of a child is determined .

Parental generation :

Mother         Father

XX                   XY (sex chromosomes )

X,X                   X,Y  (gametes )

First filial generation :

       X        Y

X    XX       XY

X     XX       XY

If XX is formed then it is girl and if XY is formed then it is boy .

Conclusion :

  • we concluded that there is 50-50 percent chance of boy or a girl .
  • Sex of a child is determined by father because father produce different gametes .
Answer 2
Answer:

Answer:

All of the above

Explanation:

Related Questions

A change in the gene pool of a population form one generation to the next that does not necessarily result in speciation is an example of
What role do predators play in maintaining the balance of an ecosystem?
Dan drew a diagram to compare the effects of human-induced environmental changes on organisms and species. Which label belongs in the area marked X? A- Impact on growth and developmentB- ExtinctionC- Change in competition D- Loss of habitat
A ____________ is a photographic record of light waves where shorter light waves appear bluer.Question 2 options:Electromagnetic SpectrumDoppler EffectUniverseSpectograph
Which detail best supports the idea that Boston molasses flood was an even worse disaster ​

Identify three of the seven common neurotransmitters and the functions of each. Then describe what each neurotransmitters controls or regulates in the body.

Answers

Answer:

One common neurotransmitter is dopamine. It is an excitatory neurotransmitter that is involved in movement, learning, attention, and emotion. GABA is another common neurotransmitter, and it is a major inhibitory neurotransmitter. It is involved in anxiety, arousal, and sleep. Glutamate is a major excitatory neurotransmitter, and it is involved in learning and memory.

Acetylcholine: Serves as a messenger between each motor neuron and skeletal muscles, which accounts for its role in helping to control skeletal muscles.

Serotonin: Affects sleep, hunger, mood, and arousal; connected to aggression and abnormal behavior

Norepinephrine: Helps control arousal and alertness; helps in regulating mood

Endorphins: Major excitatory neurotransmitter; linked to memory and learning processes; released in response to pain and intense exercise

Explanation:

:) have a good day

Answer:

Dopamine, Acetylcholine, Serotonin

Explanation:

How is Uranus different from most other planets.

Answers

Uranus has a unique position among planets, the axis of rotation is what makes it special, also the sideway tilt.
It`s magnetic axis is tipped over nearly 60 degrees from the planet's axis of rotation.

Which of the following is true about genes?Genes are responsible for all the traits of an organism.

In humans, genes are passed to an offspring from two parents.

The genes of a particular organism can never change throughout its lifetime.

Genes are made up of smaller molecules known as chromosomes.

Answers

In humans, genes are passed to an offspring from two parents. i think

Answer:

In humans, genes are passed to an offspring from two parents.

Explanation:

Chromosomes are passed from parents to offspring via sperm and eggs. The specific kind of chromosome that contains a gene determines how that gene is inherited. ... Consequently, each person has two copies (alleles) of every gene carried on an autosome: one inherited from their father and one from their mother.

What is an extremophile? Give an example

Answers

Its a microorganism a little tiny animal that lives in very extreme temperatures. Like antarctic krill.

a microorganism, especially an archaean, that lives in conditions of extreme temperature, acidity, alkalinity, or chemical concentration. hope this helps as an answer :)

.

___________succession occurs in areas where there is already soil, but the plantsand animal life there has been wiped out.
A)Secondary
B)Primary
C)Annual
D)All of these

Answers

secondary succession occurs in area where there is already soil, but the plants and animal life there has been wiped out.

Answer:

A. Secondary

Explanation:

The description the question gives is where there is soil, but all plants and animals lives have been cut out. This fits the secondary succession.

Primary succession is immediately wrong because it is when the environment is lacking soil, which is not what the question is asking. And since Primary is incorrect, this also means D. All of these is incorrect as well. Annual already has plant life

Will give thanks and five stars!Select all that apply.

The major contributions of Maury included:

fishery science
mapping the ocean bottom
oceanic chemistry
investigation of ocean currents
experiments with plankton
observation of ocean winds

Answers

The major contributions of Maury included mapping the ocean problem.
Other Questions
What is A plan goal for the Europa clipper mission
The distance of a wave crest from its resting. position is its. out of A. Wavelength B. Amplitude C. Height
1. Two animals are mated. One is homozygous dominant for one character and homozygousrecessive for another. The other animal is heterozygous for both characters. How manyphenotypes are expected in the offspring of this cross?​
Do all organisms in the food web need the suns energy to survive