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Nadya [2.5K]
3 years ago
7

What event marked the end of the Cretaceous Period?

Biology
2 answers:
xeze [42]3 years ago
8 0

Answer:

Cretaceous–Paleogene extinction event

Explanation:

The Cretaceous–Paleogene extinction event, also known as the Cretaceous–Tertiary extinction, was a sudden mass extinction

iragen [17]3 years ago
4 0

Answer: the great extinction

Explanation:  which the dinosaurs died out, except for the birds, of course.

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organism, the leopard frog is an organism made up of other tissues and organs.

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3 years ago
Will brushing your teeth for 10 minutes a day prevent cavities hypothesis
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10 minutes of brushing, two or three times a day with an abrasive substance like toothpaste will strip away the surface of your teeth. If you use a hard-bristled toothbrush, the effect will be even more severe.
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The diffusion of gas inside the lungs is dependent on two liquids: water and surfactant. Without the surfactant lining the inner
erastova [34]

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Explanation:

the air will expand

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Several students were having a discussion about the role of chromosomes in inheriting traits.
serious [3.7K]

Answer:

Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave.  

Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.

Explanation:

Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave.  - this is true. Prior to cell division, DNA molecules are organized into large structures called chromosomes. Specific regions of a DNA molecule are called genes. These dictate specific proteins which control our traits.

Genes contain thousands of chromosomes that carry specific information about building proteins for a particular trait.  - this is false - genes are segments of DNA that control specific traits by dictating the structure and functions of proteins. Chromosomes contain thousands of genes

Chromosomes are small sections of DNA that contain specific information about a trait to build proteins that people inherit. The thousands of different chromosomes passed from the parents allow for humans to look uniquely different. - this is false - chromosomes are large structures, genes are the relatively small sections of DNA. Humans have 23 pairs of chromosomes, not thousands.

Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.  - this is true. In diploid organisms, like humans, have two copies of each chromosome. These chromosomes contain slightly different versions of genes, which make us unique.

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