Gene inheritance

Question 1

How do chromosomes in pairs and single work?

Answer 1

Body cells contain pairs of chromosomes and sex cells only one chromosome from each pair. Chromosomes in pairs have the same genes in the same place but will have varying alleles of genes. Typically you have 2 alleles per gene

Question 2

How do genes in reproduction work?

Answer 2

`Genes from both parent come together to produce a full set in the offspring that produces variation. Alleles can be the same, homozygous, or different, hetrozygous

Question 3

Why are different offspring and their parents different?

Answer 3

Offspring have some similarities to their parents as they are a combination of both parents. These combinations of parents can be combined differently allowing different offspring to be similar or dissimilar.

Question 4

How can different alleles work differently in a pair?

Answer 4

Alleles can be dominant or recessive. If both alleles in the pair are dominant, they will show the characteristic, if one is recessive it will not show this characteristic but if both are recessive it will show

Question 5

How is sex determined?

Answer 5

Males have XY sex chromosomes and females have XX. The presence of the Y chromosome causes the production of testes, in their absence, ovaries develop

Question 6

How can we describe genetic and observable and characteristics?

Answer 6

The term genotype describes the genetic make-up of an organism (combination of alleles). The term phenotype describes the observable characteristics of the organism