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7Sci Chapter 15 Sec2

Heredity - Traits and Inheritance

QuestionAnswer
What does each parent give one set of to the offspring? genes
What is a plant with two dominant or two recessive alleles said to be be? homozygous
What are instructions for an inherited trait called? genes
What are the different forms of a gene that decides a characteristic known as? alleles
How much influence does each allele have when there is incomplete dominance? one degree of influence
What are two forms of a gene, one from each parent, called? alleles
What is a plant that has two dominant genes or two recessive genes called? homozygous
What is Mendel's ratio for dominant to recessive traits? 3 to 1
What is a phenotype? the way an organism looks
If an allele in a Punnett square is written Bt, what is the dominant trait? B
When writing allele pairs, what type of letter is written for the dominant trait? capital
What does an organism's inheried alleles together form? genotype
What is incomplete dominance? when each allele has its own degree of influence
For rabbits, the allele for black fur (B), is dominant over the allele for white fur (b). Suppose two black parents have three black bunnies and one white. What are the genotypes of the parents? They are both genotype Bb because both parents have the recessive allele
For rabbits, the allele for black fur (B), is dominant over the allele for white fur (b). Suppose two black parents have three black bunnies and one white. What are the possible genotypes for all four siblings? white has genotype bb, and black may have BB or Bb
What are the possible phenotypes for plant height in Mendel's experiments? tall and short
What is incomplete dominance? when one trait is not completely dominant over another
What is a Punnett Square? a way to organize possible offspring combinations
What is probability? the mathematical chance that something will happen
What is heterozygous? a plant with one dominant and one recessive gene
Created by: ndmsteach