For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase may be used more than once
To reproduce sexually, an organism must create haploid __________________ cells, or __________________, from diploid cells via a specialized cell division called __________________. During mating, the father's haploid cells, called __________________ in animals, fuse with the mother's haploid cells, called __________________. Cell fusion produces a diploid cell called a __________________, which undergoes many rounds of cell division to create the entire body of the new individual. The cells produced from the initial fusion event include __________________ cells that form most of the tissues of the body as well as the __________________-line cells that give rise to the next generation of progeny.
allele germ pollen
bivalent meiosis somatic
eggs mitosis sperm
gametes pedigree zygote
Fill in the blank(s) with correct word
To reproduce sexually, an organism must create haploid germ cells, or gametes, from diploid cells via a specialized cell division called meiosis. During mating, the father's haploid cells, called sperm in animals, fuse with the mother's haploid cells, called eggs. Cell fusion produces a diploid cell called a zygote, which undergoes many rounds of cell division to create the entire body of the new individual. The cells produced from the initial fusion event include somatic cells that form most of the tissues of the body as well as the germ-line cells that give rise to the next generation of progeny.
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a. It makes the bacteria resistant to the antibiotic. b. It provides a way for researchers to sort the bacteria that have the cloning plasmid from the bacteria that don't have the cloning plasmid. c. It aids scientists in developing new antibiotic treatments. d. It provides a way for sorting bacteria that have the gene of interest from the bacteria that just have an "empty" cloning plasmid. e. It makes the bacteria produce more clones.
Repair of heteroduplex regions formed during recombination can result in a 1:3 or 3:1 segregation of parental alleles, which indicates that ________ has occurred.
A) allelic exchange B) gene conversion C) crossing over D) recombination E) DNA replication
Which of the following is NOT found in
compact bone?
a. concentric layers of extracellular matrix b. blood and nerve canals c. yellow marrow d. red marrow e. all of these are found in compact bone
Your brother asks you to bring him pomes. Which of the following would you give him?
A. pears B. peppers C. grapes D. olives E. tomatoes