A transitional fossil shows characteristics of two between genera/species - NSC Life Sciences - Question 2 - 2017 - Paper 2

Bipedalism refers to the ability to walk on two legs. This adaptation is significant in human evolution, facilitating travel over long distances and freeing the hands for tool use.

The pelvis in bipedal species is structurally adapted to support upright posture. Important factors include cranial volume, as larger crania allow for bigger brains, along with the overall shape of the pelvis which is shorter and wider in humans compared to quadrupedal ancestors.

A shift occurred in dietary habits, evolving from a diet consisting of tough raw foods to softer, cooked foods. This change may have implications for dental structure and digestive adaptations.

The graph illustrating the percentage change in antibiotic resistance over the two decades clearly shows a rising trend in MRSA resistance. Key features to include are labeling with the correct scales on both axes, a title indicating the relationship of the data, and accurately plotted data points to reflect observed resistance changes.

Double-stranded DNA unwinds when hydrogen bonds break during replication or transcription. This process is essential as one strand serves as a template for synthesizing mRNA, which is complementary to the DNA template.

In the context of Tay-Sachs disease, a male with the condition may display symptoms such as blindness, deafness, and paralysis due to inheriting recessive alleles from both parents. The analysis of genotypes highlights carrier states (e.g., Nn) which inform disease inheritance patterns.