Science Benchmark 2 Review II Question Preview (ID: 17434)
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The allele that seems to disappear
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 covers up another allele
a) Punnett Square
b) dominant allele
c) recessive allele
d) allele
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
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
Mitosis is to _____; as Meiosis is to ______.
a) sperm ; egg
b) diploid cells ; haploid cells
c) egg ; sperm
d) haploid cells; diploid cells
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
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
Haploid numbers of chromosomes are usually found in the _____ of an organism.
a) tissues
b) body cell
c) sex cells
d) zygotes
Each human body cell has ______ total chromosomes.
a) 13
b) 18
c) 23
d) 46
Watson and ________ made the first accurate model of DNA in 1953.
a) Cricket
b) Crick
c) Best
d) Burstein
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
Sex cells from female reproductive organs.
a) sperm
b) egg
c) zygote
d) meiosis
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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