Question

Question 1 (1 point)

Which of the following conditions is characterized by excess mucus in lungs, digestive tract and liver?

Question 1 options:

	A) hypercholesterolemia
	B) Sickle cell disease
	C) albinism
	D) cystic fibrosis

Question 2 (1 point)

The physical traits of an organism are called its:

Question 2 options:

	A) gene
	B) genotype
	C) allele
	D) phenotype

Question 3 (2 points)

A purebred plant that produces yellow seeds is crossed with a purebred plant that produces green seeds. The seeds of all the offspring are yellow. Why?

Question 3 options:

	A) The yellow allele is recessive to the green allele.
	B) The alleles are co-dominant.
	C) The yellow allele is dominant to the green allele.
	D) All the offspring are homozygous yellow.

Question 4 (1 point)

In humans, the _____ determines the sex of the offspring because:

Question 4 options:

	A) male....the male can contribute either an X or a Y chromosome
	B) male.....the sperm can fertilize either a female or a male egg
	C) chromosome contribution from both parents....the offspring uses all of the parents' chromosomes
	D) female......only the female has two functional sex chromosomes

Answer 1

Ans: (1) cystic fibrosis. Explanation → Hypercholesterolemia also known as high Cholesterol, symptoms incluches chest pain, Xanthomas Sickle Cell disease cause RBC break down, symptoms of this directe are Pain and fatigue. Albinism (no melanin production), in such disease patient have pale skin. Cystic fibrosis disease harm Lungs and other main organs of human body. Therefore, option () is correct. - (2.) Ans: (D) phenotype Explanation Nucleotides sequence gene or it also called in DNA or RNA functional unit of reffered of heredity. Different forms of gene known as allele. Genetic makeup of eukaryotic of prokaryotic cell called genotype. observable of physical trait of organisme reffered as phenotype. Therefore, option "y is correct.

Ans (c) The Yellow allele Dominant allele recessive allele Explanation - yr is dominant to the green allele - yellow , yy - yellow, yy - green YTT Yellow gren op 74 74 y My The yellow allele is dominant and it supprey the affect of I recegive green allele. Therefore, option (C) is correct. (4) (A) can contribute either an x or a male.... the male Y chromosome. Explanation In male Sperm cell have x or y chromosome other hand female egg cell have only & | but on chromosome. Female only transfer one x chromosome into offspring but male transfer either & or y chromosome into offspesing. If male x chromosome transfer, it mean (xx) female offspring and if male y Chromosome transfer, it mean (XY) male offspring produced. Therefore, option (A) is correct.