BRCA1 gene is a tumor suppressor gene that can repair damaged DNA. Loss of BRCA1 gene will decrease the DNA repair, thus increasing the DNA damage. When exposed to free radical, the DNA can be damaged and the damage will accumulate. When the damage hit some area that regulating the cell replication, the cell can become cancer.
Answer: Gamete
Explanation: Gametes are haploid because when they join to form a zygote they become diploid. Remember, haploid cells contain half of the set of chromosomes.
In a food web grass is a producer because grass isn't a predator or prey it gives energy to herbivores then herbivores transfer energy to predators then carnivores eat both
A. large population residing on an isolated island
A huge population residing in an isolated setting would likely cause less genetic drift. Certain factors may less affect the population like immigration and mutation.
elephants were classified into two species, the African (Loxodonta africana) and Asian (Elephas maximus) elephants. However, genetic research has provided new insight to elephant "relatedness" and taxonomic classification at the subspecies level. African elephant classification is ongoing research
The Indian elephant (Elephas maximus indicus) is one of three extant recognised subspecies of the Asian elephant and native to mainland Asia.