A single-celled organism would be expected to undergo cell differentiation. If False, change it.

a. true
b. false


Ans: b. false

Biology & Microbiology

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In the mouse, gene A allows pigmentation to be deposited in the individual coat hairs; its allele a prevents such deposition of pigment, resulting in an albino. Gene B gives agouti (wild-type fur); its allele b gives black fur

(a) Diagram the cross between a doubly heterozygous agouti mouse mated with a doubly homozygous recessive white mouse. (b) What would be the expected phenotypic ratio in the progeny?

Biology & Microbiology

Of the 23 pairs of human chromosomes, 22 pairs are homologous and are found in both males and females. These are called ________.

A. recombinant chromosomes B. somatic chromosomes C. autosomes D. bivalents

Biology & Microbiology

Proteins that are composed of more than one polypeptide chain are said to have ________ structure

A) tertiary B) primary C) quaternary D) secondary

Biology & Microbiology

Strep infections caused by strains of Streptococcus bacteria are responsible for ________ .

a. heart failure b. scarlet fever c. myocardial infarction d. endocarditis e. rheumatic fever

Biology & Microbiology