GENETICS AND EVOLUTION
EVOLUTION
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 Question 
 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
 
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  YY and yy 
 
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  Yy and Yy 
 
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  yy and yY 
 
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  yy and Yy 
 
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Detailed explanation-1: -Purebred-Also called HOMOZYGOUS and consists of gene pairs with genes that are the SAME. Hybrid-Also called HETEROZYGOUS and consists of gene pairs that are DIFFERENT. Genotype is the actual GENE makeup represented by LETTERS. Phenotype is the PHYSICAL appearance of a trait, such as a YELLOW (or BLUE) body color.
Detailed explanation-2: -Mendel created purebred varieties of plants and crossed two different purebred varieties. The offspring of two different purebred varieties. This cross-fertilization is called a genetic cross.
Detailed explanation-3: -The parental generation, or P generation, are the first two individuals that are crossed in a breeding program.
Detailed explanation-4: -Dominant and recessive alleles can be used to explain Mendel’s observations. An organism that has two identical (same) alleles for a trait is called a purebred. purebred in the U.S. two recessive (tt).