4/27 Lecture - Modern Humans

Question 1

Core adaptations set 4

Answer 1

4) Symbolism - Art - Culture

Question 2

Jerbel Irhoud

Answer 2

315KYA
- lacks bony chin
-retains pleisiomorphic archaic features: low long braincase, no chin, supraorbital torus
Derived: large ECV + small gracile skeleton

EARLIEST known Ex. of Homo Sapien ?

Question 3

Homo sapien Idaltu

Answer 3

morphological intermediate

Question 4

Homo Sapien

Answer 4

Anatomically modern human 
100kYa Africa
40Kya Europe
levallois technolgy ( mode 3 )
\+ new types

Question 5

Sophiisticated blade tools made from:

Answer 5

Bone/
Horn
antler
ivory

Question 6

What came Out of Africa:

Answer 6

various tools
symbolic art*
tradition
burials

Question 7

transposable elements

Answer 7

copies of DNA segments from one part of a genome that have been inserted somewhere else

Question 8

nonsynonymous substitutions vs synonymous

Answer 8

synonymous substitutions - DO NOT change amino acid sequence of the protein

nonsynonymous - DOES CHANGE the amino acid sequence of a protein.

Question 9

positively selected

Answer 9

advantageous gene

Question 10

neoteny

Answer 10

pattern of delayed maturation

Question 11

Genetic variation

Answer 11

differences between individuals

Question 12

Variation within groups

Answer 12

differences between individuals WITHIN a GIVEN group of people

Question 13

Variation among groups

Answer 13

differences between entire groups of people

Question 14

selection-mutation balance.

Answer 14

mutation will introduce enough new mutants to maintain a constant frequency of the gene.

Question 15

selective sweep/

Answer 15

a beneficial mutation arises
both the mutation and DNA linked to the mutation on the same chromosome spread through the population.
POSITIVELY SELECTED MUTATION SPREAD THROUGH GROUP

Question 16

single-nucleotide polymorphisms

Answer 16

location in the DNA sequence where individuals differ by a single base

Question 17

The coding genes in these regions fall into several categories:

Answer 17

Reproductive system.
Morphology
Digestion

Question 18

environmental covariation

Answer 18

Similarity between the environments of parents and their offspring

Question 19

Polygenic risk scores

Answer 19

predict how likely a person is to have some phenotypic outcome