Science Benchmark 2 Review II Question Preview (ID: 17434)


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Sex cells from female reproductive organs.
a) sperm
b) egg
c) zygote
d) meiosis

In a segment of DNA there are 28 bases of adenine. How many bases of thymine would there be in the same DNA model?
a) 28
b) 14
c) 65
d) 92

Watson and ________ made the first accurate model of DNA in 1953.
a) Cricket
b) Crick
c) Best
d) Burstein

Each human body cell has ______ total chromosomes.
a) 13
b) 18
c) 23
d) 46

Haploid numbers of chromosomes are usually found in the _____ of an organism.
a) tissues
b) body cell
c) sex cells
d) zygotes

Asexual reproduction results in new bacteria whose DNA is ____.
a) identical to that of the parent
b) different from the parent
c) half- identical to both parents
d) none of the above

Erik wants to determine what type of reproduction a particular organism undergoes. He finds out that all of the organism’s offspring look identical to the original organism. He determines that this organism reproduces ___.
a) sexually
b) asexually
c) often
d) rarely

Mitosis is to _____; as Meiosis is to ______.
a) sperm ; egg
b) diploid cells ; haploid cells
c) egg ; sperm
d) haploid cells; diploid cells

Mitosis is to _____; as Meiosis is to ______.
a) sex cells ; body cells
b) half cells ; full cells
c) body cells ; sex cells
d) sperm cells ; egg cells

If the egg cell of a cat has 18 chromosomes, how many chromosomes will there be in the zygote after fertilization?
a) 18
b) 36
c) 9
d) 3

The allele that covers up another allele
a) Punnett Square
b) dominant allele
c) recessive allele
d) allele

The different forms a gene has for a trait
a) Punnett Square
b) dominant allele
c) recessive allele
d) allele

The allele that seems to disappear
a) Punnett Square
b) dominant allele
c) recessive allele
d) allele

Sex cells from the male reproductive organ.
a) sperm
b) egg
c) zygote
d) meiosis

The first cell that is formed when the sperm and egg unite during fertilization.
a) sperm
b) egg
c) zygote
d) meiosis

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