Number 2 one I think its correct
In process of meiosis. The hypothalamus or the master gland in most animals, including humans send signals to the ovaries and testes of the reproductive system. In response to these signals, these ovaries and testes undergoes thesex cells division which is called meiosis<span>. </span><span>Spermatogenesis </span>in male gametes, is the process of sex cell division among sperm cells. On the other hand,oogenesis<span> is for the female gametes. These cell divisions among respective gametes produces haploid cell which only contain one pair of chromosomes, in number -23. </span>
1 air
2 water
3 food
4 temperature
5 sunlight
6 shelter
Answer:
The correct answer is option b.
Explanation:
One of the species of early Homo known as Homo habilis exhibits the cranial capacity of 752 cubic centimeters. Homo erectus possesses the cranial capacity of approximately 900 cubic centimeters. Homo floresiensis exhibits the cranial capacity of 417 cubic centimeters, while Homo heidelbergenesis exhibits the cranial capacity of 1200 cubic centimeters. Therefore, after aligning these hominins on the basis of the smallest to largest cranial capacity, the correct answer will be option b.
These three factors affect how variations in genotype arise in a population:
<span>1) Sexual recombination- one-half of the parent 1 and one-half of parent 2’s genes are combined to form a brand new gene for the offspring resulting to a new type of combination that is not existing before.
2) Gene crossover- this is the trade-in of genetic material from two cells that each contains a pair or 1 maternal strand and 1 paternal strand of the parents chromosomes (Homologous).
</span>3) Chromosome aberration- it is a mutation in the chromosome wherein there is an extra or missing part of the DNA. <span> </span>
