🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Biology
8
answers
0
watching
20
views
13 Dec 2019

Which of the following prezygotic barriers occurs after successful mating?

a.

Behavioral isolation
b.

Gametic isolation
c.

Mechanical isolation
d.

Temporal isolation
e.

Hybrid breakdown

Watch
8
answers
0
watching
20
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
Jamar Ferry
Jamar FerryLv2
17 Dec 2019
Get unlimited access
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

1. Biomes - Match the biome with itsdescription.
Potential Matches:
1 : Coniferous forest
2 : Temperate forest
3 : Tundra
4 : Tropical rainforest
5 : Grassland
6 : Wetland
7 : Estuary
8 : Desert
Answer
: 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:
1 : recessive
2 : sex-linked
3 : pleiotropy
4 : carrier
5 : dominant
6 : phenotype
7 : polygenic
8 : genotype
Answer
: 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
Answer
: 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

QUESTION 1

A dam dividing a fish population will likely lead to sympatricspeciation.

True

False

10 points

QUESTION 2

As certain lineages of animals evolved more and more complexbody plans, what has happened to the Hox genes of theseanimals?

The number of Hox genes has been reduced

The more complex the body plan, the greater the number of Hoxgenes.

Complex body plans have more inactive Hox genes

There is no correlation between body plan complexity and Hoxgenes

10 points

QUESTION 3

Which of the following would lead to allopatric speciation?

the colonization of an island by a subset of the mainlandpopulation

a new river channel dividing beetles into two separatepopulations

the extinction of a large proportion of a population, leavingonly distant sub-populations

all of the above

10 points

QUESTION 4

The hybrid sterility of a hinny (cross between a female horseand a male donkey) is an example of

prezygotic isolation

allopatric speciation

sympatric speciation

postzygotic isolation

DNA ISOLATION/GEL ELECTROPHORESIS HW

1. During agarose gel electrophoresis, the cause of drag on a linear DNA molecule is the:

a. Interaction with TAE buffer

b. Nitrogen bases in the DNA molecule

c. Interaction with Ethidium Bromide in the gel

d. Agarose in the gel

2. As part of your prelab work, you should have looked at the DNA isolation protocol. Why do you boil your tubes?

a. To disrupt the cell and nuclear envelope to release the DNA

b. To seperate the DNA from other cellular debris

c. To denature the DNA for PCR, the next step

d. To isolate cheek cells3.

3. At the end of your DNA isolation procedure you will have Chelex beads and some liquid. Explain which layer has your DNA (and thus you will save) and why.

4. What is the electric charge (q) on a 200bp linear piece of DNA?

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in