Question

* Need both answered. Thank You!

Polymorphisms that have become fixed in the modern Homo sapiens lineage since its divergence from other hominin species are found in genes for ______ .

a) Cognitive development and hyoid/larynx structure

b) metabolism and hyoid/larynx structure

c) metabolism and hand/thumb musculature

d) cognitive development and metabolism

Which of the following is the most accurate statement about the relationship between gene duplication and mobile genetic elements (transposons)?

a) Mobile genetic elements can cause gene duplication, but most gene duplication events are caused by other mechanisms.

b) A duplicated gene is an example of one kind of mobile genetic element.

c) Gene duplication is one kind of genomic defense against the spread of mobile genetic elements.

d) The most common way that genes are duplicated is by the activity of mobile genetic elements.

Answer 1

Questiion1)

d) Cognitive developement and metabolism

Examples would be FOXP2 gene for brain developement and the THADA gene which is a metabolism gene contain variations in humans different from other hominid species

Question 2)

The most accurate answer would be

a) Mobile genetic elements can cause gene duplication, but most gene duplication events are caused by other mechanisms.

Although transposons do cause gene duplication as in the case of class 2 Transposons, most duplication events are caused by other mechanisms such as polyploidy, aneuploidy, ectopic recombination and replication slippage.