How does sexual reproduction lead to genetic variation?
Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. Sexual reproduction involves meiosis, which is the process of a cell doubling its DNA, shuffling its genes, and then dividing the shuffled DNA among four cells.
What type of reproduction leads to offspring that that are genetically unique?
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.
Which of the following processes results in the offspring of sexual reproduction being genetically different from their parents?
Asexual reproduction produces offspring that are genetically identical to the parent, whereas sexual reproduction produces a similar, but genetically unique offspring. In sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote ( Figure below ).
What are the three processes that lead to variation in offspring with the same parents?
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).
What is an example of variation in a species?
Variation within species affects how organisms interact with each other and their surrounding environment. For example, the size of a fish’s mouth, known as its gape, determines the size of prey it can eat. And the variety of noxious chemicals a plant produces controls which insects chew its leaves.
How many koalas currently exist in the wild 2020?
Koalas are in serious decline suffering from the effects of habitat destruction, domestic dog attacks, bushfires and road accidents. The Australian Koala Foundation estimates that there are less than 100,000 Koalas left in the wild, possibly as few as 43,000.
How many hours do koalas eat each day how does that compare with your eating habits Why is there such a difference?
Koalas eat 3 hours per day, usually during the nighttime, and rest 16 to 18 hours a day, according to the Adelaide Zoo. They sleep so much because they need time and energy to digest their food. It takes a lot of energy to digest the fibrous leaves of the eucalyptus. Koalas are herbivores who eat only eucalyptus.
What do koalas need to survive?
Koalas survive on a diet of eucalyptus leaves and can eat up to a kilogram a day! Pretty impressive, considering eucalyptus is poisonous to most animals. Their special fibre digesting organ, called a caecum, helps to detoxify the chemicals in the leaves.