Biology

Biology, 26.07.2019 03:20, 0IggyMarie0

In female kangaroos (marsupials),multiple choice the paternal x chromosome is always inactivated into a barr body. neither the maternal or paternal x chromosome is inactivated into a barr body. either the maternal or paternal x chromosome is randomly inactivated into a barr body. both the maternal and paternal x chromosomes are inactivated into a barr body, but only in about 50% of the total cells. the maternal x chromosome is always inactivated into a barr body.

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Biology, 05.07.2019 10:00, miranda3837

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Biology, 17.07.2019 10:00, groundcontrol

Below are three statements. classify them as examples of independent orientation, crossing over, or random fertilization. i: the formation of a zygote from an egg and a sperm is an unpredictable event. ii: random combinations of paternal and maternal chromosomes end up in gametes. iii: an allele on the paternal chromosome 18 ends up on the maternal chromosome 18

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Biology, 23.07.2019 13:30, ur4286

Female mammals have two x chromosomes, one from their mother and one from their father. during x inactivation, one x chromosome in each embryonic cell is randomly inactivated; therefore, all of the tissues that arise from that cell have the same inactivated x chromosome. female mammals are therefore considered to be of the maternal and paternal cells.

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Biology, 17.10.2019 22:30, amandasantiago2001

In the igf-2 allele, which chromosome is imprinted and which is expressed? a. paternal, paternal b. paternal, maternal c. maternal, paternal d. maternal, maternal

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