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ale4655 [162]
3 years ago
12

In meiosis, what makes up a tetrad

Biology
2 answers:
jeyben [28]3 years ago
5 0
A tetrad consists of 2 homologous chromosomes each of which is made up of 2 sister chromatids

Veseljchak [2.6K]3 years ago
3 0

Answer:

Two homologous chromosomes paired together, each of which has two sister chromatids.

Explanation:

Zygotene stage of prophase I of meiosis I is characterized by the pairing of homologous chromosomes with help of synaptonemal complex. Since DNA replication has occurred in S phase, each chromosome in the pair contains two sister chromatids.  

So, the chromosome pair appears to have a total of four chromatids and the structure is termed as "tetrad".

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avanturin [10]

Answer:

A

Explanation:

7 0
3 years ago
Golden rice has been genetically engineered. golden rice differs from other rice varieties because it contains genes that will p
ale4655 [162]
Beta-carotene
Hope that helps
6 0
4 years ago
Read 2 more answers
Given the gene sequence GGACCGTCGATCTTC, which of the following choices would represent an inversion mutation? A. GGACTCGATCTTC
nataly862011 [7]

Answer:

D. GGACCGTCGATCCTT

Explanation:

Mutation refers to any change in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. According to the question, an INVERSION mutation is a type of mutation in which a segment of a gene gets broken off and reattached in another way on the same DNA. Hence, the only change in inversion mutation is the arrangement of the nucleotide bases on the gene.

Considering the nucleotide sequence: GGACCGTCGATCTTC, the sequence that describes an occurrence of inversion mutation is: GGACCGTCGATCCTT because the segment TTC in the original sequence has been rearranged as CTT in the mutated sequence.

4 0
3 years ago
Prairie dogs are rodents that live in colonies. Black-tailed prairie dog (Cynomys ludovicianus) colonies typically have around 1
Tresset [83]

Population density is the aspect of population ecology of the black-tailed prairie dog does this statement describe.

Explanation:

Population density is the number of organisms are there in per unit area. It is used to measure geographical area occupied by organisms and its statistics.

In population ecology the structure, dynamics and contribution of population of species is studied. The idea of species distribution is studied in it.

The population density determines the number of species or members of particular population are present is a particular area.

An area of  low density population will have more resources and more area per organism and less competition for resources and vice versa for high density population.

Prairie dogs have 12 adults per hectare of area this tells the population density of the rodents.

7 0
3 years ago
What is the basis on which the subdivisions in a Geological time scale are made
Andru [333]
 <span>The geologic time scale is divided into periods, which are then divided into epochs, which are further divided into ages. For example, the time of the dinosaurs lasted 3 periods (Triassic, Jurassic, Cretaceous), each period had 3 epochs (late, early, middle), and each age fit into one of those. Many epochs have more than 1 age associated with them. 
As for the basis for differentiating the eras, I'm not so sure. The only one I can say for sure is the end of the Cretaceous, which is when the dinosaurs suddenly became extinct due to a meteor impact. I think the divisions are based on significant, global-scale events that changed the world.

Sorry its so long but that the answer i think >:) ur welcome

</span>
3 0
3 years ago
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