N5 2.4 Variation & Inheritance

What term describes the differences which can be found between members of the same species.

• interspecific

• variation

• fertilisation

• allele

Which of the following human characteristics shows discrete variation?

• Height

• Blood groups
• Skin colour

• Tongue Rolling

Which form of variation is a form of Single Gene Inheritance?

• continuous variation

• discrete variation

What term describes the type of inheritance that is controlled by more than one gene?

(a)  

• Polygenic inheritance
• Continuous variation

• Single Gene Inheritance

• Discrete variation

For which type of variation are differences grouped into categories?​ ​

• discrete variation
• continuous variation

• single gene inheritance

• polygenic inheritance

Answer explanation

Remember that the types of variation are continuous or discrete.

The types of inheritance are single gene inheritance or polygenic inheritance.

Characteristics showing continuous variation are a result of

(a)  

• Polygenic inheritance
• Single gene inheritance

Answer explanation

Remember that the types of variation are continuous or discrete.

The types of inheritance are single gene inheritance or polygenic inheritance.

The word ​ (a)   describes the different forms (versions) of a gene.

• allele
• chromosome
• homozygous
• phenotype

Genotype refers to …?

(a)  

• an individuals physical appearance

• the possible combination of alleles in a gene
• whether an allele is dominant or recessive

• describe the differences that exist between members of the same species

For a specific trait, a child will receive ​ (a)   allele from each parent.

• 1
• 2
• 3
• 4

Which of the following would be phenotypes?

• Green eyes

• Bb

• Yellow seeds

• TT