All Vulcans have pointed ears (P) and a right-sided heart (R) which are dominant over Earthling alleles of rounded ears (p) and a left-sided heart (r). Both Vulcans and Earthlings are homozygous for each allele. Mr. Spock has a Vulcan father and an Earthling mother. Gametes produced by an individual that are the same as the gametes contributed by each parent to produce that individual are called parental types. Gametes that have a combination of parental and maternal alleles are called recombinant types. Recombinant gametes are the result of independent assortment during Metaphase I if genes are on different chromosomes or crossing over during prophase I if genes are on the same chromosome. Indicate which of the following gametes produced by that Mr. Spock are parental types (1) and which are recombinant types (2) by placing a 1 or a 2 in the blanks above each gamete type. Number: Answer Answer Answer Answer Gamete:  PR pR Pr pr

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.