The answer to your question is Dinosaurs (:
Answer:
C. 25°
Explanation:
Prepare a sketch such that the first line with points VRS intersect the line with points TRW at R where ∠WRS and ∠VRT are vertical angles.
Because line TW intersect line SV at R, then ∠WRV and ∠SRT are vertical angles.
The sum of ∠SRT and ∠VRT =180°
Thus (25x +30)°+(5x)° =180°
25x +30° +5x =180°
30x= 180°-30°
30 x = 150°
x= 150/30
x= 5°
∠SRT = 25x+30 = 25*5 +30 =155°
∠WRS= 180°-155°=25°
Answer:
Traits like white eye color in fruit flies are linked to the X chromosome.
Why:
Thomas Hunt Morgan was a scientist, he worked with Drosohilla and studied the sex chromosomes in fruit flies. In the course of his study he discovered that the white eye colour is recessive compared to the dominant red eye colour in the flies and that the white eye color gene is linked to the X sex chromosomes.
West Nile lead to a decline in susceptible avian and human hosts, with a subsequent decline in the number of cases since 1997
Answer: During fertilization, an egg with haploid number of chromosomes unites with a sperm cell with a haploid number of chromosomes to form a zygote with a diploid number of chromosomes.
Explanation: Fertilization is a process in which a sperm cell from a male fuses with an egg from a woman to form a zygote. Sperm cells and eggs are diploid cells and they have half the number of chromosomes as the parent cell. During fertilization the haploid chromosomes from the sperm cells combine with the haploid chromosomes from egg to form a zygote with diploid chromosomes. Diploid cells have the same number of chromosomes as the parent cell. Haploid cells are produced in meiosis while diploid cells are produced in mitosis.
