V4 Inheritance 2

• Biologie
• Middelbare school
• vwo
• Leerjaar 4

Goals for today:

• Know the difference between a gene, an allele and a locus
• Know what dominant and recessive alleles are
• Know the difference between genotype and phenotype
• Be able to calculate the probability of inheriting a certain trait in monohybrid inheritance

Wat is an allele?

1. A different name for a gene
2. An inheritable disease
3. A mutation in a sex chromosome
4. A variant of a gene

Compare a skin cell to a liver cell from the same person. Are the alleles in these cells the same or different?

1. Different alleles
2. The same alleles

Which combination of alleles is homozygous recessive?

1. AA
2. Aa
3. aa
4. Both AA and aa

Two people both have one allele for straight hair and one allele for curly hair. They get a biological child together.

Which combination(s) of alleles could the child inherit?

1. Straight-Straight
2. Straight-Curly
3. Curly-Curly
4. All options are possible

What is the location of a particular gene on a chromosome called?

1. karyotype
2. nucleotide
3. allele
4. locus

The genotype is

1. The appearance of an organism
2. The complete set of alleles of an organism
3. Environmental factors
4. The complete set of alleles + environmental factors

A person has genotype Aa for a particular trait. What do we call this genotype?

1. Homozygous
2. Heterozygous
3. Dominant
4. Recessive

Identical twins do have the same genotype but not necessarily the same phenotype

1. true
2. false

Which of these is the name of an allele that has to do with hair?

1. Hair colour
2. Brown
3. Hair texture
4. Blue

Goal: Be able to complete Part C of the Monohybrid Cross worksheet (homework) 

Don't know how? Use these resources:

• Look at the examples on page 375 of the book
• Practice with Part B of the Worksheet

Still unsure about the key terms? Or did you miss the last lesson?

• Amoeba sisters video (see Classroom)
• LessonUp "V4 Inheritance 1"
• Part A of the Worksheet