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BIOL 102 Lecture Notes - Lecture 6: Arctic Fox, Zygote, Infertility

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6 Feb 2017

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The arctic fox and the desert fox live in such different places they never encounter each other. Temporal isolation- mating behavior or fertility at different times. The leopard frog mates in early spring and the bull frog mates in early summer. The prairie chicken is not attracted to the mating display of the ring necked pheasant. Inherited traits are more likely to foster offspring or produce more offspring. Often leads to sexual dimorphism which is the differences in appearance between males and females of the same species, such as in color, shape, size, and structure that are caused by the inheritance. Plants pollinated by the hummingbird do not receive pollen from plants pollinated by the black. The gametes from a dog and a cat cannot unite to form a zygote. Hybrid inviability- gametes unite but viable offspring cannot form. The goat and sheep can mate but the zygote formed does not survive. Hybrid infertility- viable hybrid offspring cannot reproduce.

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Related Questions

1. Biomes - Match the biome with itsdescription.

Potential Matches:

1 : Coniferous forest

2 : Temperate forest

4 : Tropical rainforest

: Caribou, musk ox and lemmingsare common, along with permafrost, mosses and lichens.

: May be hot or cold, but alwaysvery dry.

: Long snowy winters and shortsummers allow for cone-bearing evergreen trees to flourish.

: Spectacular displays of colorin the fall occur before deciduous trees drop their leaves.

: Plentiful rainfall and warmyear round temperatures produce a habitat home to the greatestdiversity of plants and animals.

: Mostly treeless expanse knownfor large herds of grazing mammals.

: Home to migrating waterfowl,this type of biome is important in reducing flooding and improvingwater quality.

: Transition area between a riverand an ocean with salinity ranging from nearly that of freshwaterto that of the oceans.

2 Genetics - Match the terms with the mostsuitable description.
(Points : 16)

Potential Matches:

: An allele that can be expressedby an individual that is heterozygous.

: The genetic make-up of anindividual.

: The control of more than onephenotypic character by a single gene.

: The visible physical expressionof an individual's genetic make-up.

: An allele that can only beexpressed when an individual is homozygous.

: A trait controlled by more thanjust a single pair of alleles.

: A trait controlled by a genelocated on either the X or Y chromosomes.

: An individual carrying only oneallele of a recessively inherited disorder.

3. Evolution - Match the terms with the mostsuitable description.
(Points : 16)

Potential Matches:

1 : hybrid sterility

2 : habitat isolation

3 : hybrid inviability

4 : geographic isolation

5 : mechanical isolation

6 : gamete mortality

7 : temporal isolation

8 : behavioral isolation

: Because of a single mutation ina developmental gene, two closely related species of wasps have aslightly different anatomy of their sex organs making interbreedingimpossible.

: Two species of snakes aremorphologically very similar but breed during differentseasons.

: Two similar species oftreehoppers live and feed on two separate species of trees.

: Males of two species of birdsuse different mating dances to attract their mates.

: Due to a geographic barrier, asmall portion of a population remains isolated and its gene pooldiverges from that of the original population.

: Sperm from a male of onespecies dies in the reproductive tract of the female of a differentspecies before fertilization can occur

: Mules are a cross between adonkey and a horse; they are viable, healthy animals, but theycannot reproduce.

: A cross between two species ofsalamanders yields offspring, but they do not survive long enoughto reproduce