Central Florida-PCB 3063-Spring18-DIERCKSEN Activities and Due Dates Ch 2 Tutori

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Central Florida-PCB 3063-Spring18-DIERCKSEN Activities and Due Dates Ch 2 Tutorial- Melosis 01/19/2018 11:59 PM0/100 Gradebook Print Calculator -1 Periodic Table Question 1 of 1 Genetics: A Conceptual Approach 6m Edtion MHE/Freeman Map A horse has 64 chromosomes male donkey produces a mule, which is usually sterile. and a donkey has 62 chromosomes. A cross between a female horse and a How many chromosomes does a mule have? Number 32 chromosomes Why are most mules are sterile? An even number of chromosomes are required for synapsis during prophase l and proper pairing during metaphase 1 An even number of chromosomes are required for synapsis during prophase Il and proper pairing during metaphase il. O An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase lI An even number of chromosomes are required for synapsis during prophase ll and proper pairing during metaphase I Previous Give up & View Solution e, Check Answer Neri Exit terms of use contact us help

Explanation / Answer

Synapsis - The process of fusion of homologous chromosomes comes from mother and father during Prophase 1 of meiosis 1.

Then

A) Horse = 64 Chromosome gives gametes contain half number of chromosome i.e. 32 chromosome.

Donkey = 62 Chromosome gives gametes contain half number of chromosome i.e. 31chromosome.

Horse(32) X Donkey(31)

Mule = 63 Chromosomes

Mule contain odd number of Chromosomes however, For the synapsis even number of chromosomes are required otherwise there are no synapsis and crossing over.No separation of homologous chromosomes in metaphase1 during meosis 1.Non functional gametes are produce.that’s why some of the mule are infertile.

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