Genes, Alleles & Punnett Squares

Can a dominant trait “skip” a generation? True or False

If an organism’s genotype is Tt, is it heterozygous or homozygous?

If both parents are Bb, what are the possible genotypes of their offspring? LETTERS

How do you write a genotype for a recessive trait?

Does a Punnett square predict exact offspring, or probabilities?

Give an example of a homozygous recessive genotype. LETTERS

How many copies of each gene do you inherit? a- 23.  b-1.  c.4.  d.2

Give an example of two alleles for eye colour. Use letters and explain them.

If a plant has alleles T and t for height, what does each allele represent? T is for what and t is for what?

Can a heterozygous individual pass on a recessive allele? yes or no

What information do you need to set up a Punnett square? 1-Phenotype of both parents 2- Genotype of both parents

Where are genes found in a cell? a. Cytoplasm b. heterozygous c. chromosomes

If a child shows a recessive trait, what do we know about the parents? 1- Both parents have dominant alleles 2- Both both carried at least one recessive allele

Why does a heterozygous individual show the dominant trait? 1- The dominant allele masks the recessive allele 2- The recessive allele is not present

What is the phenotype of a mouse with alleles bb for fur colour (b = white)?

Which is visible — genotype or phenotype?

Can two organisms have the same phenotype but different genotypes? yes or no explain

What happens when a dominant allele is present? 1- Never expressed 2-Always expressed

Give an example of a homozygous dominant genotype. LETTERS