Choose the true statements about the human and mouse genomes.
_____ The human genome shares 99% of its genes with the mouse genome.
_____ A comparison of genomes confirms that mice and humans shared a common ancestory more recently than humans and pufferfish.
_____ Very few genes are conserved in the two genomes.
_____ Little rearrangement of genes has occurred in the two genomes.
__X__ The human genome shares 99% of its genes with the mouse genome.
__X__ A comparison of genomes confirms that mice and humans shared a common ancestory more recently than humans and pufferfish.
_____ Very few genes are conserved in the two genomes.
_____ Little rearrangement of genes has occurred in the two genomes.
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Connective tissues typically have _____
A) little space between the membranes of adjacent cells B) the ability to transmit electrochemical impulses C) the ability to shorten upon stimulation D) relatively few cells and a large amount of extracellular matrix
Ants, termites, and some other insects as well as naked mole-rats are __________ and thus include
sterile workers who care for the reproducing members of the group. Fill in the blank(s) with the appropriate word(s).
Which one of the following is the lowest level of biological organization in which evolutionary change can occur?
A) cell B) organism C) community D) population
Cytoplasmic organelles are:
a. absent in prokaryotic cells; present in eukaryotic cells. b. present in both prokaryotic and eukaryotic cells. c. present in prokaryotic cells; absent in eukaryotic cells. d. absent in both prokaryotic and eukaryotic cells.