Answer: D.
Explanation:
Dizygotic twins are formed due to the fertilisation of two eggs by two sperms which get implanted in the uterus and develops two fetuses, that s why they have 50% of genes in common. whereas monozygotic twins form from a single fertilized egg that splits and so they have 100% of their genes in common.
Hence, the correct statement is D.
Answer:
<u>Polygenic therapies are more likely to show </u><u>unintended effects</u><u> in other regions of the genome likely resulting in harmful diseases.</u>
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Explanation:
Gene therapy involves biotechnological techniques that add or remove gene sequences in the genome. These are typically used in eliminating harmful genes that cause genetic diseases or disorders and are generally thought to improve an individual's quality of life.
Polygenic traits are controlled by several genes. Similarly, polygenic diseases may be caused by variations in several gene sequences. These include hypertension, heart disease, and diabetes. Polygenic therapies are more likely to show unintended effects in other regions of the genome, leading to other deleterious disease-causing effects.
The nuclear energy cause s catastrophic meltdown .
Answer:
1) The main function of the male reproductive system is to produce and transport sperm.
2) The male reproductive cells are produced in the testes, which are contained in the scrotum.
3)These cells travel through a tube, where they are mixed with fluids from glands to form semen.
Explanation:
Sperm cells are produced in male organism in the oval structure called testis. Sperm cells contain genetic information lf these sperm cells combines with the female egg cells, it produces zygote which turns into a new baby organisms. The new organism is different from their parents because half genes comes from male and half from female.
