Answer:
a. 1/4 chance of occurring
b. 81/256
c. 3/4
d. 0.26
Explanation:
X-linked recessive inheritance is a pattern of inheritance in which a mutation in a gene on the X chromosome causes the phenotype to always get expressed in males (they have one X and one Y chromosome with mutation on the X) and in females who are homozygous for the gene mutation (mutation on both X chromosomes).
Indicating the mutation with h and the normal allele with H.Thus, if a heterozygous woman (XHXh) and an unaffected man (XHY). we have:
(XHXh) x (XHY)
XHXH XHXh XHY XhY
normal female normal male affected male
0.5 0.25 0.25
1/2 1/4 1/4
a. 1/4
b. Each unaffected offspring has 3/4 chance of occuring: four unffected - 3/4 x 3/4 x 3/4 x 3/4 = 81/256
c. 1/2 + 1/4 = 3/4
d. The probability of an unaffected offspring is 3/4. Here, the binomial expansion equation (where x = 2, n = 5, p = 1/4, and q = 3/4). The answer is 0.26, or 26%, of the time. probability of affected is 1/4. Thus, using this
P(x) = (⁵₂) pˣ (1 - p)ⁿ⁻ˣ =
= (⁵₂) (1/4)² (3/4)³ =
= 5!/3!2! (0.0625) (0.4219) =
= 10 (0.026)
= 0.26
Answer: Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins). RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule. Transcription ends in a process called termination.
ALL PROTISTS ARE UNICELLULAR AND MICROSCOPIC IN NATURE, is the correct answer.
Protists are diverse collection of organisms which are primarily microscopic and unicellular in nature. Protists are scientifically categorized as eukaryotes and one definition of protists states that prosists are all eukaryotes organisms that are not animal, plant or fungi.
Because they can move faster than you. And when you move your ands to the fly it looks like it’s in slow motion
Answer: Option C.
Tundra
Explanation:
Tundra is a biome that has low Precipitation. Precipitation is a form of water that fall from the atmosphere to the Earth surface. Which could be inform of snow, sleet e.t.c.
Tundra is the coldest of all types of biomes. It has low temperature, little precipitation,low nutrients. It is located near the north Pole of the Earth. It is characterized by permafrost, permanent frozen layer on its surface.
