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BIO Exam 4

straighten up you lil bitch

QuestionAnswer
What is the end result of meiosis and the subsequent fertilization of gametes? An offspring with a chromosome complement unlike that of either parent
When a sperm and egg combine, the resulting embryo has: half of the mother's genetic information and half of the father's
Some males have an abnormal karyotype consisting of 47 chromosomes with an extra Y chromosome. This condition is most likely caused by _____. nondisjunction in the production of the male gamete
Which event makes meiosis a reductional division and why? separation of homologs in meiosis I because it produces 2 haploid (n) daughter cells from a single diploid (2n) parent cell. Separation of homologs results in a reduction in chromosome number.
Which statement is FALSE concerning gametes produced by meiosis? Gametes contain nonrandom combinations of maternal and paternal chromosomes.
How could you distinguish human mitotic cells from human meiotic cells? By counting the number of daughter cells resulting from mitotic and meiotic division
What are the (1) haploid number, (2) ploidy, and (3) total number of chromosomes? Haploid: Number of distinct types of chromosomes in a cell (n) Ploidy: Combination of the number of sets, and n
The karyotype of a trisomic individual is symbolized as ____. 2n+1
A species has ten distinct types of chromosomes. A haploid cell of this species contains how many chromosomes? 10; Haploid cells only contain one copy of each chromosome.
True, or False?: Down syndrome is caused by an extra copy of chromosome 21 True