1 A farmer has rabbits with two particular traits, each controlled by a separate gene.
Coat colour brown is completely dominant
to white. Tailed is completely dominant to
tail-less. A brown, tailed male rabbit that is
heterozygous at both loci is crossed with a
white, tail-less female rabbit. A large number
of offspring is produced with only two
phenotypes: brown and tailed, white and tail-
less, and the two types are in equal numbers.
(i) State both parents' genotypes and the
gametes that are produced by each during
the
process of meiosis.
Male genotype:
Female genotype:
Male gametes:
Female gametes:
(ii) Predict the genotypic and phenotypic ratios
of the F, generation. Show your working.

answer; i believe the correct answer to the above question is ( friction)

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.

wegner's theory did not explain how the continents could move

explanation: