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Definitions
Definitions
Punnet squares and Pedigrees
Think
Miscellaneous
100

Allele that is only expressed in absence of a dominant allele

What is Recessive traits

100
the trait that will appear if at least one dominant allele is present.
What is Dominant trait
100
What is the probability of having a blonde haired daughter, when both parents genotypes are BB. (dominant brunette alleles)
What is zero
100

what is the probability of Aa?


50%

100

Heterozygous is when…

  1. The alleles are the same

  2. The alleles are different

  3. The alleles are absent

  4. The alleles are present

The alleles are different

200

2 different alleles  (Bb)

What is heterozygous

200
different forms of genes.
What is alleles
200
a tool that can be used in order to predict traits of the offspring based on probability
What is Punnet squares.
200

  1.  If brown (B) is dominant to blue (b), what are the possible phenotype(s) of this cross?

  1. Bb

  2. Bb and bb

  3. Brown

  4. Brown and Blue 

Brown and Blue

200

Which of the following is a phenotype?

  1. Aa

  2. Red hair

  3. Heterozygous

  4. DNA

Red Hair 

300
segments of DNA which carry instructions for specific traits.
What is Genes
300
tool used to trace traits through a family.
What is Pedigree
300
In a pedigree, what represents the particular traits we are looking for.
What is the shaded areas.
300

  1. These parents are ______

  1. Heterozygous

  2. Homozygous

Homozygous

300

A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?

  1. 25%

  2. 50%

  3. 75%

  4. 100%

 50%

400
the study of how traits are passed from parents to offspring’s.
What is Heredity
400

The physical characteristics of an organism (ex: tall)

What is Phenotype

400
One parents genes are Bb and the other parents genes are BB. what will their 4 offsprings genotype be.
BB, Bb, Bb, bb
400

In this Punnett square, which is the dominant trait(The B stands for bud).

  1. Purple flower bud

  2. White flower bud

  3. Dominant

  4. Recessive

Purple flower bud

400

Mr Murdoch's parents both have brown hair and so do his brother and sister
what type of gene would make it possible for him to be blonde?

What is recessive 

500

the genetic makeup of an organism.

What is Genotype

500

Trait that is located on one of the two sex chromosomes

what is sex-linked trait

500
the circle and squares in Pedigree respresent
What is circle= females, square= males
500
What carries genes from the mother and father to the offspring?
What is Chromosomes.
500

Blonde hair is a ______

  1. Trait

  2. Genotype

  3. Gene

trait