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Hominins first appear by around 6 million years ago, in the Miocene epoch, which ended about 5.3 million years ago. Our evolutionary path takes us through the Pliocene , the Pleistocene , and finally into the Holocene, starting about 12,000 years ago.
Answer:
If this was edmentum. this was my question and answer
Explanation:
see pic below
Answer:
Ok, no boxes but whatever
Mammals - Endothermic Homeostasis (Warm Blooded), Hairy Body, Have babies live
Birds - Endothermic Homeostasis(Warm Blooded), Have eggs, feathers, claws
Bacteria - Single celled, use binary fission to divide
Fungi - Multi or single celled, have chitin cellular walls
Plants - Have cellulose plant walls, multicellular organism
Archae Bacteria - Same as normal, except they live in crazy enviorments, like at the bottom of the ocean or in a volcano or radiation pool
Protozoa - Single celled organism class, like ameoba
b. error
c. reparation
d. mutation and error
e. recombination
Answer: a. mutation
Explanation:
A mutation is a change or alteration and a process that occurs in the DNA sequence of the organism. This happens due to the mistake in the DNA replication process or because of the environmental factors for example exposure to the UV radiation or due to smoking. These mutations either favors the survival of the organisms or they are lethal for the organisms.
The correct answer is C.)
(Which is similar to what the answer is described as below. I'm just giving the letter answer to make it easier.)
True
False
Explanation:
It's wrong
Fimbriae is present in female reproductive system
that collects the ova which is released after ovulation
fimbriae is the part of infundibulum
Answer:
1/8 Red, polled
1/8 Red, horned
1/4 roan, polled
1/4 roan, horned
1/8 white, horned.
1/8 white, horned.
Explanation:
Roan cow with heterozygous horned genotype = RWPp
Roan, horned bull genotype = RWpp
Crossing the two:
RWPp x RWpp
Offspring:
2 RRPp = Red, polled
2 RRpp = Red, horned
4 RWPp = roan, polled
4 RWpp = roan, horned
2 WWPp = white, polled
2 WWpp = white, horned.
Hence, the phenotypic ratio is:
1/8 Red, polled
1/8 Red, horned
1/4 roan, polled
1/4 roan, horned
1/8 white, horned.
1/8 white, horned.
Answer:
The phenotypic ratio of the cattle offsprings is as follows:
Red polled = 1/8
Red horned = 1/8
White polled = 1/8
White horned = 1/8
Roan polled = 2/8
Roan horned = 2/8
Explanation:
This is a cross involving two genes; one coding for coat color and the other for horn in cattle. The alleles of the first gene (Red, R and White, W) are codominant i.e. will both be expressed in a heterozygous state (Roan, RW). The polled allele (P) is dominant over the horned allele (p) in the second gene.
According to the question, a roan cow that is heterozygous for the horned gene will have genotype, RWPp while a roan bull that is horned will have genotype, RWpp. Hence, in a cross between these two cattles, each parent will undergo meiosis to produce the following possible gamete combinations;
RWPp- RP, Rp, WP, Wp
RWpp- Rp, Rp, Wp, Wp
These gametes used in a punnet square (see attachment) will produce 16 possible offsprings with 6 distinct phenotypes. The phenotypes are:
Red polled (RRPp or RRPP) = 2/16 or 1/8
Red horned (RRpp) = 2/16 or 1/8
White polled (WWPP or WWPp) = 2/16 or 1/8
White horned (WWpp) = 2/16 or 1/8
Roan polled (RWPP or RWPp) = 4/16 or 2/8
Roan horned (RWpp) = 4/16 or 2/8