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Why is mating between two individuals of opposite sex considered a selected trait or characteristic in the evolution of most species?
For every activation of a proton-pump in the ETC, the Respiratory Assembly kicks into action once.
a) How many ATP's will be made by the Respiratory Assembly for every NADH from Kreb's Cycle?...for every FADH2?... (2 marks)
b) What happens to this ATP - i.e. how does it get out of the mitochondrion?
How do producers get energy from the sunlight
Cells are divided into which two major groups?
Blind girl, parents, brothers and sisters who were also blind, was married to a blind boy, a brother and sister who were also blind, and the other members of the family - mother, father, two sisters and a brother - sighted. From this marriage, 8 sighted children were born. Analyze the pedigree and name the reason for the birth of sighted children in blind parents.
Hypertrichosis is inherited as a trait linked to the Y-chromosome, which manifests itself by 17 years of age. One of the forms of ichthyosis (scaly, patchy thickening of the skin) is inherited as a recessive trait linked to the X chromosome. In a family where the woman is normal, and the husband has only hypertrichosis, a boy was born with signs of ichthyosis.
a) Determine the likelihood of this boy showing hypertrichosis?
b) Determine the probability of birth in this family of children without anomalies and what gender will they be?
Classic hemophilia is transmitted as a recessive trait linked to the X chromosome.
a) A man with hemophilia married a woman who does not have this disease. They give birth to children without anomalies - a daughter and a son, who remarry with non-hemophiliacs. Will grandchildren find hemophilia and what is the likelihood of sickness in the family of a daughter and son?
b) A man with hemophilia marries a normal woman whose father suffered from hemophilia.
Determine the probability of the birth of healthy children in this family
In a family where the parents could hear well and had: one had smooth hair, and the other had curly hair, a deaf child with smooth hair was born. Their second child heard well and had curly hair.
What is the probability of further occurrence of deaf children with curly hair if it is known that the gene for curly hair dominates over smooth hair, deafness is a recessive trait, and both pairs of genes are located on different chromosomes?
Task 1. Describe the crossing schemes and indicate the splitting by genotype and phenotype.
Take, for example, that A is brown eyes and a is blue.
1.1 Splitting by phenotype and genotype when crossing homozygotes by dominant and recessive in the case of complete dominance?
1.2 Splitting by phenotype and genotype when crossing heterozygotes in the case of complete dominance?
1.3 Splitting by phenotype and genotype when crossing heterozygote and homozygote by dominant in case of complete dominance?
1.4 Splitting by phenotype and genotype when crossing heterozygote and homozygote by recessive in case of complete dominance?
Explain how the temperature of the human body is kept constant
