Answer:
Sex-linked trait
Explanation:
When a gene is present on the X chromosome, but not on the Y chromosome, it is said to be X-linked. X-linked genes have different inheritance patterns than genes on non-sex chromosomes (autosomes). That's because these genes are present in different copy numbers in males and females.
Answer:
DNA is pivotal to our growth, reproduction, and health. It contains the instructions necessary for your cells to produce proteins that affect many different processes and functions in your body. Because DNA is so important, damage or mutations can sometimes contribute to the development of disease.
Answer:
<em>The correct option is D) Birds descended from the most recent common ancestor of reptiles.</em>
Explanation:
The modern system of classification is based on the evolutionary history of organisms. The organisms having more common ancestors from the past stand more closely together in the evolutionary tree. The evolutionary history of the birds showed that birds originated from an ancestor which was a reptile in the past. Hence, in the modern system of classification, birds are placed as members of the clade reptiles.
