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Describing Genetic Crosses - Life Sciences Cyberbridge


The combination of alleles carried by an individual is its genotype. ... True- breeding round peas would have two copies of the R allele and a genotype of RR.



The expected numbers of different genotypes produced by a particular cross. Example: 1 RR, 2 Rr, and 1 rr individuals could result from a cross of two Rr ...

Why some traits can be dominant and recessive at the same time


Mar 27, 2013 ... Genotype is the genes that we have and phenotype is the trait those genes ... So in terms of our red flower gene, our flower can be RR, Rr or rr.

Bio 102 Practice Problems Mendelian Genetics: Beyond Pea Plants


o'clock has the genotype rr. So, this cross is RR × rr. The F1 offspring will therefore all be Rr, all pink. The F2 offspring (cross is Rr × Rr) will be ¼ RR, red; ½ Rr, ...

1.06 The first child of two normally pigmented parents ... - Dr. Tiftickjian


Jan 9, 2014 ... What cross would you make to determine if it has genotype RR or Rr? Explain how the results of your cross would enable you to determine the ...

Genetics 101 - Hosta Library


The rr genotype doesn't produce any red pigment, so it is a white flower. So, how do we get a pink hybrid from the genotype Rr? What happens is that the R ...

Biology-Online • View topic - phenotype and genotype ratio


Dec 11, 2005 ... I'm confused about phenotype and genotype ratio after you do a ... for example, after the cross, I have RR Rr Rr rr, the genotype is 1:2:1 and the ...

Chapter 10 Study Guide Trait Genes Alleles Homozygous ...


pea plant appears purple in color (its phenotype is purple), its genotype ... Again, Mendel crossed a pure breeding round seeded variety (RR) with a pure ...

Mendelian Genetics - Shmoop Biology


Our pea plant that produces only round seeds has a genotype or genetic constitution dictating seed shape that we denote as RR (it really doesn't matter what ...

Genetics-(higher level) - Leavingbio.net

leavingbio.net/genetics-higher level.htm

When we express the genotype of a characteristic we state the pair of alleles. ..... D. rr x rr. 9. In the cross Yy x Yy, what percent of offspring would have the same ...

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The genotype Rr is - Answers.com


Is RR genotype or phenotype? It's a genotype. The phenotype is a physical manifestation of the genotype, which means that it's what happens on the outside  ...

Baby Steps through Punnet Squares


genotype = the genes of an organism; for one specific trait we use two letters to ... if that organism's genotype is homozygous recessive (two little letters, like "rr").

genetics notes bi - Biology Junction


... 2 dominant or 2 recessive genes (e.g. RR or rr); also called pure; Heterozygous genotype - gene combination of one dominant & one recessive allele (e.g. Rr); ...