PLLLZ HELP Which point on the timeline best indicates the time when birds first appeared?

Biology

1 answer:

Vedmedyk [2.9K]3 years ago

3 0

Answer:

The answer should be C

Explanation:

If you look at the the graph, C points to the time period after mammals appeared. Since birds are mammals, they should have appeared after the time that mammals first came to be on Earth.

Hope this answer helps you! Please rate it and mark it Brainliest!

You might be interested in

Does blood flow through the veins 3.5 times an hour

Tema [17]

Blood travels at three feet per second when it leaves the heart, but it slows down as it gets into smaller arteries and capillaries. It takes a minute to get around the body. A typical human body contains 5.6 liters (6 quarts) of blood.

7 0

4 years ago

Strength between particles is called

densk [106]

Answer:

van der Waals forces

Method:

Online, and other sources to make sure the answer is correct.

7 0

3 years ago

Which is RNA polymerase binding site on a typical gene?

Sphinxa [80]

The correct answer is A, the "promoter" site is the RNA polymerase binding site on a typical gene. This is how the process of gene expression begins. The RNA polymerase (a protein that builds RNA) binds to the promoter site of the DNA strand. It then begins the process of 'transcribing' the DNA code into an RNA strand, which can then be 'translated' into an amino acid chain to form a protein, which is the expression of the gene.

7 0

3 years ago

Read 2 more answers

Klinefelter syndrome in humans leads to underdeveloped testes and sterility. this is caused by which chromosomal condition?

Anuta_ua [19.1K]

Klinfelters syndrome is when there is an extra X chromosome in males.

So instead of the normal sex chromosomes for males (XY), a male with klinefelters syndrome will have XXY.

I have included a pic of the karyotype to give you a better idea of what I'm talking about.

Hope this helps! I'm happy to help with any other questions you might have :)

4 0

4 years ago

How many genes code for hemoglobin?

Pepsi [2]

Answer:

Four

Explanation:

Like all proteins, the "blueprint" for hemoglobin exists in DNA.

3 0

3 years ago

Read 2 more answers