In humans muscular dystrophy (m. d.) is caused by a recessive allele on the X chromosome. Draw a punnett square to show how two unaffected people can have a child with muscular
dystrophy.
a. Genotypic ratio
b. Phenotypic ratio
e. Is the child with muscular dystrophy a male or a female?
d. What's the probability that their next child will have m. d.?
e. What percentage of the male children will have m. d.?
f. What percentage of the female children will have m. d.?

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Ascientific idea becomes valid when it is what?

To store strawberries in sugar syrup, lucy placed them in a jar and covered them with sugar but did not add any water. do you think syrup will be formed? justify. a. no. since water is not added, there cannot be any syrup formation. b. no. the higher concentration of sugar on the outside will cause the water from the sugar to diffuse in the strawberry cells causing them to swell without formation of any syrup. c. yes. the higher concentration of sugar on the outside will cause the water from the strawberry to diffuse out resulting in syrup formation. d. yes. the sugar will melt over time and form the syrup.