Environmental Studies

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Sickle-cell anemia is found in highest frequencies in populations from: a. East Africa b. Central ... Started by CBme	3 Replies 31 Views	Aug 11, 2018 by janieazgirl
Scientists have found that carrying sickle-cell anemia (meaning, one is heterozygous) protects an ... Started by DelorasTo	1 Replies 30 Views	Aug 11, 2018 by dajones82
The allele for sickle-cell anemia is believed to have originated in areas where there are large ... Started by asd123	1 Replies 104 Views	Aug 11, 2018 by fur
The continuous gradation over space in the form or frequency of a genetic trait is known as a: a. ... Started by @Brianna17	1 Replies 167 Views	Aug 11, 2018 by FergA
Why does a bulky body tend to conserve more heat than a slender one? a. It has less surface area ... Started by kshipps	3 Replies 33 Views	Aug 11, 2018 by apple
Anthropologists study biological diversity among populations in terms of: a. mutation b. gene ... Started by leilurhhh	1 Replies 175 Views	Aug 11, 2018 by bimper21
Which of the following is most likely to suffer effects from summer heat? a. someone with a ... Started by Arii_bell	1 Replies 110 Views	Aug 11, 2018 by hollysheppard095
The formation of a new species is known as_______________while _______________focuses on the ... Started by nramada	1 Replies 79 Views	Aug 11, 2018 by mistyjohnson
A sustained directional shift in a population's average characteristics is called: a. ... Started by khang	3 Replies 136 Views	Aug 11, 2018 by aadams68
If two populations of primates were separated for a substantially long period of time by ... Started by geoffrey	1 Replies 31 Views	Aug 11, 2018 by zenzy
What do we call the factors that separate two breeding populations? a. fission factors b. ... Started by nevelica	1 Replies 86 Views	Aug 11, 2018 by bpool94
Achromatopsia is a condition sometimes caused by founder effects. It is also known as: a. river ... Started by appyboo	1 Replies 66 Views	Aug 11, 2018 by blakeserpa
Why is the genetic comparison between humans and chimpanzees sometimes misleading? a. It ignores ... Started by Engineer	3 Replies 249 Views	Aug 11, 2018 by owenfalvey
In a heterozygous individual, the dominance of one allele means that: a. the recessive allele has ... Started by sammy	1 Replies 235 Views	Aug 11, 2018 by diana chang
When two or more genes contribute to the phenotypic expression of a single characteristic, it is ... Started by genevieve1028	1 Replies 150 Views	Aug 11, 2018 by vkodali
Which of the following best describes a karyotype? a. It is the array of chromosomes found within ... Started by Pineapplelove6	1 Replies 99 Views	Aug 11, 2018 by Madisongo23
Compared to other chromosomes, the Y chromosome is: a. small and carries very little genetic ... Started by asd123	3 Replies 112 Views	Aug 11, 2018 by akpaschal
A group of like species is a _______________. Fill in the blank(s) with correct ... Started by Haya94	1 Replies 32 Views	Aug 11, 2018 by choc0chan
The major organizing principle of biological science is _______________. Fill in the blank(s) ... Started by appyboo	1 Replies 87 Views	Aug 11, 2018 by kswal303
The smallest working units of biological classification systems are _______________. Fill in the ... Started by charchew	1 Replies 39 Views	Aug 11, 2018 by Sophiapenny
The science of classification is called _______________. Fill in the blank(s) with correct ... Started by lbcchick	3 Replies 69 Views	Aug 11, 2018 by ebonylittles
Sir Charles Lyell proposed a nonreligious theory to account for variations in the earth's surface ... Started by NClaborn	1 Replies 126 Views	Aug 11, 2018 by mariahkathleeen
The wings of a bird and those of the butterfly are considered __________ structures. Fill in the ... Started by vHAUNG6011	1 Replies 66 Views	Aug 11, 2018 by Gabe
James Watson and Francis _______________ discovered the existence of DNA in 1953. Fill in the ... Started by Mollykgkg	1 Replies 67 Views	Aug 11, 2018 by Bison
Darwin's theory is properly known as the theory of __________. Fill in the blank(s) with correct ... Started by rmenurse	3 Replies 91 Views	Aug 11, 2018 by Natalie4ever