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romanna [79]
3 years ago
7

What do X and Y chromosomes affect? O A. Whether someone is a female or male O O O B. How many parents a person has. C. The shap

e of a person's thumb. O D. Whether earlobes are attached.​
Biology
1 answer:
babymother [125]3 years ago
3 0

Answer:

b is right

Explanation:

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Question 10 of 10
sasho [114]

Option D

polymerase chain reaction (PCR) do Makes more copies of a sample of DNA

<u>Explanation:</u>

A procedure to create several portraits of a distinct DNA section is termed as Polymerase chain reaction. In other words, it is a lab routine handled to compose various representations of a portion of DNA. PCR is extremely explicit and can be utilized to increase, or model, a particular DNA destination from a hybrid of DNA particles.  

In PCR, the effect is regularly cycled within a range of temperature variations, which deduct countless models of the destination range to be exhibited. PCR intends to obtain sufficient of the objective DNA region that it can be examined or applied in some other way.

5 0
3 years ago
What is the function of the root cap
Elza [17]
The root cap protects the <span>apical meristem allows for primary growth in the </span>root<span>, which paves the way for lengthening of the plant as well as cell specialization. Hope this helps!! I got it from my book.</span>
3 0
3 years ago
I need help can you pls help me &lt;3
Gala2k [10]

Answer:

temparate deciduous

grasslands

tropical rain forest

taiga

tundra

grasslands

tropical rain forest

temperate deciduous rainforest

Explanation:

6 0
3 years ago
In a family of four children, all four children have blond hair and blue eyes. Which statement best explains why all four childr
sweet-ann [11.9K]
I think its B if I'm not correct I'm sorry
And get a A+ on the assessment :D
4 0
3 years ago
Read 2 more answers
*Fill in the blank*
Gekata [30.6K]

The noncyclic pathway is a FLOW of electrons from water, to photosystem II, to PHOTOSYSTEM I to NADPH. Energy is released  as  ELECTRONS  move through the first electron transfer chain. This energy pumps HYDROGEN IONS  into the thylakoid compartment, and then they power the formation of ATP as they flow back out. Sunlight provides the energy needed to keep this cycle going.

----------------------------------------------------------------------------------------------------

  1. Luminous energy is trapped by chlorophyll in Photosystem II.
  2. When the pigment molecules absorb light, electrons provided by water molecules get in a higher energy level.
  3. The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.
  4. <em>When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules. </em>
  5. Luminous energy absorbed move the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.
  6. <em>When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II. </em>
  7. When the water molecule breaks down, hydrogen ions remain in the thylakoid lumen, from where they are pumped to the stroma by the ATP synthase.
  8. The released energy is used to produce ATP molecules.
  9. Hydrogen ions go back from the stroma to the thylakoid compartment.

The final products are oxygen, ATP, and NADPH.  

--------------------------------------------

Related Link: brainly.com/question/13592516?referrer=searchResults

8 0
2 years ago
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