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SashulF [63]
3 years ago
14

What is the major function of the valves found in human veins?

Biology
1 answer:
Bad White [126]3 years ago
8 0
To make blood flow only in one direction.
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In humans, male-pattern baldness is controlled by an autosomal gene that occurs in two allelic forms. Allele Hn determines nonba
dimaraw [331]

Answer:

75%

Explanation:

The autosomal gene for baldness has two possible alleles: Hb (baldness) and Hn (nonbaldness).

A man and a woman, both heterozygous <em>HnHb,</em> have a son. Each parent produces gametes <em>Hn</em> or <em>Hb</em>.

The possible genotypes of their children, resulting from the combinations of those gametes, are:

  • 1/4 HnHn
  • 2/4 HnHb
  • 1/4 HbHb

In males, the Hb allele is dominant. Therefore, their son has a chance of 3/4 = 0.75 = 75% of having the Hb allele which determines baldness.

7 0
3 years ago
The drop down answers are
Varvara68 [4.7K]

Answer:

1. skeletal

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6 0
2 years ago
What do barbell curls and dips have in common? A. They are both leg exercises. B. They both use free weights. C. Neither exercis
erastovalidia [21]
<h2>Answer is option "D"</h2>

Explanation:

  • Barbell curls and dips both are arm exercise to decrease the weight of  arm and muscles
  • This is perform by the flexing of both elbows  and keeping your shoulder bone withdrew
  • Do not allow heavy weight from lower back to arch and push up to about chest level
  • Keep the spine in zero potential position
  • Determine the width of grip and your elbow to ought the potential position of exercise
  • Hence the right answer is option D "they are both arm exercise"

6 0
3 years ago
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Whyshould humans save endangered animals from extinction?
AnnZ [28]
When any animal becomes extinct reguardless of its position in the food chain there is a trickling affect to all other links, creating overpopulation and over kill of other species now that the habitat balance has become skewed. Having one species become extinct will cause further issues a for other species down the road.
5 0
3 years ago
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Which type of rock forms when molten material cools and hardens inside Earth?
Anon25 [30]

Answer:

Igneous rock

Explanation:

6 0
3 years ago
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