Gene flow is the movement of genes between different populations. Which of these would NOT be a barrier to gene flow?

A) Oceans

B) Big deserts

C) Large mountain ranges

D) Natural bridges connecting islands

The two steps of aerobic respiration are a krebs cycle and electron transport chain b glucose and oxygen c none of these are part of aerobic respiration d krebs cycle and calvin cycle

Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example ofA) an autocrine signal.

Green beetles survive because birds don't see them, whereas brown beetles get detected. This is an example of which mechanism of microevolution? A. gene flow B. genetic drift C. natural selection

Consider the table. Types of Bacteria FormShapeAssociated disease CoccusXStrep throat BacillusRod shapedY SpirillumSpiralCholera Which best describes X and Y? X = Spherical; Y = E. coli X = Comma shaped; Y = Whooping cough X = Oval shaped; Y = S.

Suppose that a given gene has two alleles, a and a, which are the dominant and recessive alleles, respectively. which genotype (s) would result in an individual with the dominant phenotype?

Why is a cells DNA like the books in a library

In humans the allele for albinism is recessive to the allele for normal skin pigmentation. If two parents are heterozygous, what is the parents genotype?

What is the outer edge of a frog blood cell called?

In 1883, a catastrophic event caused climate change, a massive tidal wave, and violently red sunsets. Which event below would be the most likely to have caused the listed effects in 1883? A. a volcanic eruption B. a typhoon C. a hurricane D.

What kind of microbe causes HIV?