Biology, 07.04.2020 19:18 normarjohnson
Allopatric speciation requires which of the following? A. partial genetic isolation combined with natural selection B. introduction of two populations to each other, forming a hybrid zone C. extreme natural selection in a hostile environment D. total separation of two populations by a physical barrier
Answers: 3
Biology, 22.06.2019 06:00
Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.
Answers: 2
Biology, 22.06.2019 15:00
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow
Answers: 1
Biology, 22.06.2019 15:50
Which individual below would be considered heterozygous? a.dd b.dd c.dd
Answers: 2
Allopatric speciation requires which of the following? A. partial genetic isolation combined with na...
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