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Quizlet 19

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Quizlet 19
1. Alleles are different versions of the same gene and one may be dominant to the other. –TRUE

2. In a dihybrid cross of a mother and father who are both heterozygous dominant for chin fissures and dimples, what would be the phenotypic ratio of chin fissures and dimples in their offspring? –-9:3:3:1

3. If two alleles are heterozygous, it means they are the same allele. --FALSE

4. If the letter ""C"" stands for the dominant allele for having a chin fissue and the letter ""c"" stands for the recessive allele for smooth chin, an individual having two alleles - Cc - would be described as ______________. –HETEROZYGOUS

5. If the letter ""C"" stands for the dominant allele for having a chin fissue and the letter ""c"" stands for the recessive allele for smooth chin, an individual having two alleles - cc - would be described as ______________. –HOMOZYGOUS DOMINANT

6. _________ are units of information found on chromosomes that determine specific traits and are passed on to offspring from parents. --GENES

7. If the letter ""C"" stands for the dominant allele for having a chin fissue and the letter ""c"" stands for the recessive allele for smooth chin, an individual having two alleles - CC - would be described as ______________. –HOMOZYGOUS DOMINANT

8. A heterozygote has _____________. –A PAIR OF DIFFERENT ALLELES

9. Second-generation offspring from a cross between two homozygotes are the __________. –F2 GENERATION

10. 100% of children who have the recessive gene for cystic fibrosis develop the disease which means that this gene is completely penetrant.—TRUE

11. In a dihybrid cross of a mother and father who are both homozygous dominant for chin fissures and dimples, what would be the phenotypic ratio of chin fissures and dimples in their offspring? –ALL OFFSPRING HAVE CHIN FISSURE & DIMPLES

12. If the father is ""Cc"" for chin fissue allele and the mother is ""Cc"" for chin fissue, what will the offspring genotype be using the Punnett Square method. – 1 CC,

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