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guajiro [1.7K]
3 years ago
5

Identify the true statement about the head of the ulna. a. Found at the distal end of the bone. b. Helps form the elbow joint. c

. Helps form the pivot joint between the ulna and radius. d. Found at the proximal end of the bone.
Biology
1 answer:
nataly862011 [7]3 years ago
8 0

Answer:

A

Explanation:

The head of the ulna is found at the distal end of the bone.

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The answer is the fruit fly groups do not successfully reproduce to make viable offspring.

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The picture shows the dihybrid cross of 2 guinea pigs.
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Picture from another source is attached

Answer:

1. BbRr

2. Black, rough fur

3. bbRR

Explanation:

1. The genotype of the parents can be seen at the top of the cross "BbRr". The genotype is what alleles the parents have. In this case, it is the alleles of two different genes - for color and texture of fur. The genotype gives rise to 4 possible allele combinations that an offspring can inherit (BR, Br, bR or br)

2. The dominant allele is usually displayed as a capital letter, and the recessive as lowercase. Without further information, we will assume this is the case. The parents are heterzygous for both traits, meaning they each carry a dominant and recessive allele for both traits. That means the dominant allele will be expressed in the phenotype. Therefore, the guinea pigs will have black, rough fur.

3. Empty box shown in the attachment. We simply read the column and row  of alleles that are contributing to this offspring's genotype. We can see looking at the square that from one parent (top) the baby will inherit bR, and from the other parent (left) it will inherit bR as well. This means the baby's genotype will be bbRR

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What common condition is caused by the presence of three copies of chromosome 21?
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A large portion of rain forest was removed and scientists noted a local increase in
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The first one.

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