BIOLOGY HIGH SCHOOL

Attached earlobes are a recessive trait in humans. In the tree below, people with attached earlobes are shaded in. Which best describes the person labeled X in the tree?C. A male with one recessive allele
D. A male with no recessive alleles
Attached earlobes are a recessive trait in humans. In the - 1

Answers

Answer 1
Answer: If this follows the normal format for genetic trees, its neither, as a circle is a female, not a male. If it is a female, then it would be a female with one recessive gene. 

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Hemophilia is an x-linked recessive disease. Under which of the following conditions will a female child inherit hemophilia? Both parents must have the hemophilia allele. Only the father must have the hemophilia allele. Both sets of grandparents must have the hemophilia allele. Only the mother must have the hemophilia allele.

Answers

Answer:

Both parents must have the hemophilia allele.

Explanation:

I just took the test. And if the trait is recessive the both parents must have it to make it an applicable trait.

What is the primary source of energy for all
living organisms?

Answers

Answer: the sun

Explanation:

Please give me 5 stars!! :)
Thw primary source is the Sun

Water molecules are polar, which give water its unique properties. One important property is water is the universal ________A. Solvent

B. Drink

C. Liquid

D. Solute

Answers

Answer:

A. solvent

Explanation:

Its called the universal solvent because its capable of dissolving more substances than any other liquid.

Give an example of 4 type of movable joint and describe the type of action which the joint permits.

Answers

The 4 types of movable joints are:
1) Hinge joint - a joint that works like a hinge of a door. example: elbow joint

2) gliding joint - this joint allows a bone to slide over another, this joint is found in wrists and ankles.

3) pivot joint - a freely moving joint in which movement is limited to rotation. pivot joint in the neck located at its 1st and 2nd vertebrae. allows the head to move back and forth.

4) ball and socket joint - rounded end of one bone fits the cup like end of another bone. example is the glenohumeral joint in the shoulder.

A relationship where one organism lives in or on another organism for the purpose of getting energy

Answers

This would be paratisitism. One organism, the one that is getting the energy, is called the parasite, and the other, the one from whom the energy is taken, is called the host. 


an example is human (host) and tapeworm (parasite)

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b. Allele change and microevolution
c. Slow adaptation, stasis, and expansion

Answers

Migration, genetic drift, speciation, and natural selectio are the factors are common to both gradualism and punctuated equilibrium. Gradualism meaning gradual and suddenly happened, while punctuated equilibrium means taking over time.

Answer:

A. Migration, genetic drift, speciation and natural selection.

Explanation:

Migration, genetic drift, speciation and natural selection factors are common to both .Gradualism and punctuated equilibrium are two ways of the evolution. Gradualism is  selection and variation that happens. Small variations are fit an organism. In punctuated equilibrium, change comes in spurts. There is a period of very little change, and only few huge changes occur, often through mutations in the genes of a few individuals. Mutations are random changes in the DNA. That are not inherited from the previous generation, but passed in next generation. Though mutations are often harmful, the mutations that result in punctuated equilibrium are very helpful to the individuals in their environments.
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