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Andru [333]
2 years ago
6

What is testis and wnat is overy how zygote form​

Biology
1 answer:
laila [671]2 years ago
7 0

Answer: hope this helps u

Explanation:

One of two egg-shaped glands inside the scrotum that produce sperm and male hormones is called testis.

One of a pair of female glands in which the eggs form and the female hormones estrogen and progesterone are made.

A zygote forms when a sperm penetrates the outer surface of an egg.

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Exposure to light affects the body's production of _____, which helps regulate the sleep-wake cycle.
Pepsi [2]
Melatonin I believ eis your answer. Not melanin like the pigment in our skin but melanin the sleep hormone. 
6 0
3 years ago
In general, did the simulated mice align with your predictions from the Punnett squares?.
Maksim231197 [3]

Research studies are often carried out using mouse. From the study, the simulated mice was said to align with the predictions from the Punnett squares. So the answer is Yes.

The reason why some of the percentages did not exactly match your predicted results because the Mice don't have large litters, so the sample size was not large enough.

If the experiment is to be done again, I can improve upon experimental design by;

  • Increase the number of mice bred.
  • Examine a different trait within mice.
  • Examine a trait in another species.
  • Test patterns for future generations.

A lot of studies is been carried out on the Genetics of the mouse.  The  early development of inbred lines were studied. The mouse is known to be a good tool to identify the genetic basis of both normal and disease traits.

See full question below

In general, did the simulated mice align with your predictions from the Punnett squares?

(Choices: Yes, No)

Error Analysis: What might be the reason that some of your percentages didn't exactly match your predicted results?

Options are;

  • Gametes aren't responsible for inheritance.
  • Mice don't have large litters, so the sample size was not large enough.
  • The wrong type of mice were used.

If you did the experiment again, how could you improve upon the experimental design? Check all that apply.

  • Increase the number of mice bred.
  • Examine a different trait within mice.
  • Examine a trait in another species.
  • Test patterns for future generations

Learn more from

brainly.com/question/12038732

6 0
3 years ago
Read 2 more answers
Porque razon los hongos son utilizados para madurar cierto tipos de quesos
SVETLANKA909090 [29]

Because the fungi are used to mature certain types of cheeses


4 0
3 years ago
The light reactions require the cooperation of 2 photosystems to power linear electron flow from h2o to NADP+.?
Iteru [2.4K]

Answer:

Only Photosystem I  - 1, 5, 6

Only photosystem II - 3, 2

Both Photosystem I and II   - 4

Explanation:

Only Photosystem I  

a) Reduction of NADP+ -  uses light energy to convert NADP+ to NADPH2

b)  Reduction of electron transport chain between the two photosystems

c) Oxidation of electron transport chain between the two photosystems.

Only photosystem II

a)  Oxidation of water - here the absorbed light energy is used to dissociate of water molecules to produces protons (H+) and O2 along with free ions

b)Reduction of primary electron acceptor - An electron is taken by pheophytin which is a primary electron acceptor molecule that is  located within photosystem II and hence it get reduced.

Both Photosystem I and II  

a) Light is absorbed in both photosystem I and II. While in photosystem I, light waves of large wavelength i.e 700 nm are absorbed, in photosystem II light waves of short wavelength of i.e 680 nm are absorbed.

7 0
3 years ago
Match the following:Part A1. Transverse foramina present.2. No canals or foramen present. It articulates superiorly with the sac
Stels [109]

Answer:

1. Transverse foramina present: Cervical

2. No canals or foramen present. It articulates superiorly with the sacrum: Coccyx

3. Receive the most stress: Lumbar

4. Attach to ribs: Thoracic

5. Articulates with hip bones of the pelvis: Sacrum

Explanation:

The vertebral column is a <u>series of 33 bones called vertebrae</u> that play a key role in organ protection, movement of body, and overall support. The column has been divided into <u>5 different regions</u> with the number of bones.

<u><em>1. Cervical Vertebrate</em></u><u>:</u> These are the group of <u>seven vertebrae of the neck</u>, start immediately below the skull. Two cervical bones C1 and C2 are unique in function. They are responsible for the movement of the head.  They have <u>transverse foramina</u> which <u>gives passage to vertebral artery and vein</u>.

<em><u>2. Thoracic Vertebrae:</u></em> They are a group of twelve small bones that form the vertebral spine in the upper trunk. The function of the thoracic vertebrae is to articulate with ribs to produce the bony thorax.

<em><u>3. Lumbar Vertebrae: </u></em>This is the largest segment of the vertebral column that consists of 5 bones between the rib cage and pelvis. They <u>carry all of the upper body weight</u> providing flexibility and movement to the trunk region.  This is why it can <u>receive the most stress easily</u>.

<em><u>4. Sacrum Vertebrae: </u></em>There are 5 sacral vertebral fused bones. It <u>connects to the hip bones and play role in forming a strong pelvis</u>.

<em><u>5. coccyx Vertebrae:</u></em> These are a group of 4 fused bone. There is <u>no vertebral canal due to a lack of vertebral arches</u>. They <u>provide </u>an <u>attachment site for muscles</u> ligament and tendons. They also <u>play a role in stabilization and support</u> while sitting.

5 0
3 years ago
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