Chapter 19 - Types of Selection

Sexual selection

Sexual selection

________ happens when some qualities make people more likely to attract mates than others.

Cauliflower

________ resulted by selecting plants with bigger blossom clusters.

Brassica

________ oleracea wild cabbage is an example of artificial selection in plants.

Sula nebouxii

________, the blue- footed booby bird, females choose mates with the males.

Industrial Revolution

Prior to the ________, trees in the moths 'habitat in England were coated with a light- colored lichen, which allowed the lighter- colored moths to blend in with the trees.

Clutch size

________ (the number of eggs produced by birds every reproductive cycle) is subject to stabilizing selection.

Vestigial structures Some creatures

________ have anatomical characteristics that do not appear to have a purpose in the contemporary organism but may have served a purpose in an ancestor organism.

Sharks

________ (cartilaginous fish) and dolphins (mammals) do not have a common ancestor, yet due to their comparable surroundings, they have developed similar body forms.

Genetic variation

________ in a population is caused by mutations.

Biogeographical evidence Biogeography

________ is the study of species distribution.

Morphology Homologous

________ features with same origins but distinct functions are also indications of evolution.

Brussels sprouts

________ were created by crossbreeding plants with lateral buds.

Convergent evolution

________ occurs when species that dwell in comparable habitats gain similar traits despite the absence of a recent common ancestor.

Broccoli

________ was created by deliberately breeding plants with more strong stalks and more blooms.

Humans

________ and chimps have a more recent common ancestor than ________ and dogs.

theory of evolution

According to Darwin's ________ by natural selection, there were natural variances in the moth population, with some moths having darker wings and others having lighter wings.

Peacocks

________ with more vibrant plumage are more likely to attract mates than those with duller plumage.

Natural selection

________ can sometimes result in disruptive selection, in which individuals at both ends of the phenotypic spectrum are more likely to survive and reproduce than those with an intermediate phenotype.

darker wings

Moths with ________ had a survival benefit throughout the Industrial Revolution, and as a result of natural selection, they grew more common in the population.

natural selection theory

According to ________, the environment selects for people that have phenotypes that provide a survival advantage in that environment.

Humans

________ choose which individuals in a community survive and reproduce, rather than the environment choosing for those with good traits.

Natural selection

________ can also result in stabilizing selection, in which the intermediate phenotype is favored while extreme phenotypes are rejected.