If your mother and father both have cystic fibrosis, which is caused by a recessive allele, the odds of

your having only one allele for the disorder are



a. 1/4.
b. 1/2.
c. 3/4.
d. 1.
e. 0.


E

Biology & Microbiology

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Control of gene expression  

_____  allows bacteria to adapt to changing environments. _____  is critical for development in multicellular organisms. _____  allows bacteria to replicate without control. _____  allows multicellular organisms to maintain homeostasis. _____  it stops multicellular organisms functioning as a whole.

Biology & Microbiology

Which of the following will result in an increase in population?

a. birth rates lower than death rates b. birth rates and death rates equal c. birth rates higher than death rates d. no birth rate and stable death rate

Biology & Microbiology

The introduction of a small population onto an island that results in a limited gene pool for a population best describes

a. the Hardy-Weinberg law. b. genetic drift. c. the bottleneck effect. d. the founder effect. e. the effect of genetic isolation.

Biology & Microbiology

A human zygote contains 46 chromosomes.

Answer the following statement true (T) or false (F)

Biology & Microbiology